Applications in engineering science最新文献_第5页

Optimising haemodynamic performance: Investigating the impact of varying anastomosis angles on blood flow in brachiocephalic fistula 优化血流动力学性能：探讨不同吻合角度对头臂瘘血流的影响

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-10-21 DOI: 10.1016/j.apples.2025.100270

Nima Rahmati, Arshia Eskandari, Kian Javari, Alireza Jabbari, Mona Alimohammadi

This study investigates the effect of anastomosis angle on haemodynamic performance in Brachiocephalic fistulas, using computational fluid dynamics to inform optimal surgical configurations for hemodialysis access. Nine idealized brachiocephalic fistula geometries with anastomosis angles ranging from 15° to 135°, in 15° increments, were simulated under pulsatile flow conditions. Key haemodynamic parameters, including pressure, velocity, time-averaged wall shear stress, oscillatory shear index, high oscillatory low magnitude shear, and relative residence time, were assessed to evaluate flow stability and clinical implications. Results indicate that lower anastomosis angles (15°, 30°) exhibit higher TAWSS values, peaking at 3.8 Pa in the anastomosis zone, and demonstrate concentrated HOLMES and OSI regions, indicating elevated flow disturbance and vascular stress. In contrast, wider angles (120°, 135°) promote smoother, more laminar flow, with up to a 60 % reduction in adverse WSS-derived parameters, particularly HOLMES and RRT, when compared to sharper angles. These improvements are especially notable in the venous segment, where lower flow stagnation reduces the risk of thrombus formation. Among all configurations, the 135° angle emerged as the most favourable, balancing shear forces and reducing disturbed flow zones, thereby enhancing long-term AVF patency and function. Clinically, sharper angles may benefit patients with thrombosis risk due to increased shear clearing, while wider angles are better suited for minimising endothelial damage and improving durability. These findings support the need for personalised surgical planning, with anastomosis angle tailored to patient-specific vascular health and clinical priorities.

本研究探讨了吻合角度对头臂瘘管血流动力学性能的影响，利用计算流体动力学为血液透析通路的最佳手术配置提供信息。在脉动流条件下，模拟了吻合角为15°~ 135°、增量为15°的9个理想头臂瘘几何形状。评估关键血流动力学参数，包括压力、速度、时间平均壁剪切应力、振荡剪切指数、高振荡低强度剪切和相对停留时间，以评估血流稳定性和临床意义。结果表明，吻合角越小（15°、30°）TAWSS值越高，吻合区TAWSS值在3.8 Pa处达到峰值，且HOLMES和OSI区域较为集中，表明血流扰动和血管应力升高。相比之下，更大的角度（120°、135°）可以促进更平稳、更层流的流动，与更大的角度相比，可将不利的wss参数（尤其是HOLMES和RRT）降低60%。这些改善在静脉段尤其显著，在那里较低的血流停滞降低了血栓形成的风险。在所有配置中，135°角是最有利的，可以平衡剪切力并减少干扰流区，从而增强AVF的长期通畅和功能。临床上，由于剪切清除的增加，更尖锐的角度可能有利于降低血栓风险的患者，而更宽的角度更适合最小化内皮损伤和提高耐久性。这些发现支持个性化手术计划的必要性，吻合角度根据患者的血管健康和临床优先事项量身定制。

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引用次数: 0

Performance assessment of submerged caisson units under marine dynamic loading: Experimental validation and computational modeling for coastal energy infrastructure 海洋动载下水下沉箱单元的性能评估：沿海能源基础设施的实验验证和计算模型

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-09-22 DOI: 10.1016/j.apples.2025.100263

Mansour Hamzeh, Mohammad Hasan Ramesht, Javad Majrouhi Sardroud

Caisson breakwaters are widely used in offshore infrastructure; however, their performance under extreme hydrodynamic and geotechnical conditions remains insufficiently characterized, particularly regarding sediment dynamics and installation efficiency. This study proposes an integrated framework for evaluating caisson structural stability, hydrodynamic interaction, and seabed response, introducing novel design features, such as perforated chambers and hybrid jack-up installation, to enhance resilience in high-energy marine environments. A combination of Computational Fluid Dynamics (CFD) simulations Flow Science Three-Dimensional (FLOW-3D), Open Field Operation and Manipulation (OpenFOAM), wave flume testing (at 1:25 and 1:50 scale), and field calibration at tembak port was employed to analyze wave loading, scour behavior, and displacement. The numerical models incorporated sediment transport equations and settlement predictions, which were calibrated against physical and operational datasets. Results show that perforated caisson designs reduced wave reflection coefficients from 0.78 to 0.45, resulting in a 27 % decrease in seabed erosion. Meanwhile, increasing caisson mass by 15 % lowered displacement by 28 %. Installation time was reduced by 15 % via optimized ballasting, and material costs decreased by 18 % using High-Performance Concrete (HPC). The validated framework offers transferable design and performance metrics aligned with Permanent International Association of Navigation Congresses (PIANC) and Overseas Coastal Area Development Institute (OCDI) standards, supporting the development of cost-effective, durable, and environmentally sustainable caisson breakwaters for oil, gas, and petrochemical port facilities.

沉箱防波堤在海洋基础设施中应用广泛；然而，它们在极端水动力和岩土条件下的性能仍然没有充分表征，特别是在沉积物动力学和安装效率方面。该研究提出了一个评估沉箱结构稳定性、水动力相互作用和海底响应的综合框架，引入了新的设计特征，如穿孔室和混合自升式装置，以增强在高能海洋环境中的弹性。采用计算流体力学（CFD）模拟Flow Science三维（Flow - 3d）、Open Field Operation and Manipulation （OpenFOAM）、波浪水槽测试（1:25和1:50比例尺）和tembak港口现场校准相结合的方法，分析了波浪载荷、冲刷行为和位移。数值模型结合了泥沙运移方程和沉降预测，并根据物理和操作数据集进行校准。结果表明，穿孔沉箱设计将波浪反射系数从0.78降低到0.45，使海底侵蚀减少27%。同时，沉箱质量增加15%，排水量降低28%。通过优化压载，安装时间减少了15%，使用高性能混凝土（HPC），材料成本降低了18%。经过验证的框架提供了可转移的设计和性能指标，与常设国际航海大会协会（PIANC）和海外沿海地区发展研究所（OCDI）的标准保持一致，支持开发具有成本效益、耐用性和环境可持续性的沉箱防波堤，用于石油、天然气和石化港口设施。

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引用次数: 0

Coupled fluid-thermal analysis of a square chamber with a wavy top wall and an internal solid elliptical/circular block 具有波浪顶壁和内部实心椭圆/圆形块的方形腔室的耦合流热分析

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-10-08 DOI: 10.1016/j.apples.2025.100268

Soumyanil Sadhu Deep, Sayma Sultana, Tahsin-Ul Haque, Md Tanvir Rahman, Sumon Saha

This study investigates the thermal performance of the conjugate free convective flow of air within a square enclosure containing a heat-conducting obstacle at the center, either elliptical or circular-shaped, and a wavy cold top wall. Variations in both the corrugation frequency and amplitude of the wavy top wall, along with adjustments to the shape of the central obstacle, are systematically examined to identify the optimal thermal performance of the system. Governing Navier-Stokes and energy equations are solved using the finite element method. Initially, three different obstacle shapes, namely horizontal ellipse, vertical ellipse, and circle, are considered to assess the influence of the obstacle’s geometrical orientation, while maintaining fixed corrugation frequency and amplitude. Later, three values of dimensionless corrugation amplitude (A = 0.02, 0.03, and 0.04) and corrugation frequency (f = 7, 9, and 11) are taken to determine their effects on heat transfer efficiency and entropy generation. A comprehensive analysis is conducted, evaluating various performance indicators, including average fluid temperature, average Nusselt number, total entropy generation, and the ecological coefficient of performance. Notably, the study prioritizes achieving enhanced heat transfer while minimizing entropy generation. The results reveal that the optimal configuration offering the highest heat transfer effectiveness with the lowest entropy generation is obtained when a vertical elliptical obstacle is employed, evidenced by the consistently highest value of ECOP for flows with varying Ra. This favorable outcome is most evident with a corrugation amplitude of A = 0.04 and a corrugation frequency of f = 11, while all other parameters are kept constant.

本研究研究了在中心有导热障碍物（椭圆形或圆形）和波状冷顶壁的方形外壳内空气的共轭自由对流的热性能。波浪顶壁的波纹频率和振幅的变化，以及对中心障碍物形状的调整，都被系统地检查，以确定系统的最佳热性能。采用有限元法求解了控制Navier-Stokes方程和能量方程。首先，考虑三种不同的障碍物形状，即水平椭圆、垂直椭圆和圆形，以评估障碍物几何方向的影响，同时保持固定的波纹频率和振幅。随后，取无量纲波纹振幅（A = 0.02、0.03和0.04）和波纹频率（f = 7、9和11）三个值来确定它们对换热效率和熵产的影响。综合分析，评价各性能指标，包括平均流体温度、平均努塞尔数、总熵产、性能生态系数。值得注意的是，该研究优先考虑在最小化熵产生的同时实现增强的传热。结果表明，当采用垂直椭圆障碍物时，获得了传热效率最高、熵产最低的最佳配置，不同Ra流动的ECOP值一致最高。在其他参数保持不变的情况下，波纹幅值为a = 0.04，波纹频率为f = 11时，效果最为明显。

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引用次数: 0

Data-driven natural frequency tuning in cantilever structures through strategic perforation patterns 数据驱动的自然频率调谐悬臂结构通过战略穿孔模式

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-11-09 DOI: 10.1016/j.apples.2025.100272

Amir Hossein Rabiee, Parsa Shafiei, Alireza Farhadi

The objective of this study is to investigate the dynamic behavior of a cantilever rectangular beam by tuning its natural frequency through a novel perforation technique. The research aims to optimize the number and position of holes in the beam by integrating machine learning models with an optimization algorithm. Three distinct datasets were created to capture both geometric and statistical characteristics of the perforation pattern. Four predictive models were evaluated including linear regression, decision tree, support vector regression, and gradient boosting. The vulture optimization algorithm was then employed to determine the optimal configuration that achieves a target natural frequency. Results show that while models based on the binary and ten-feature datasets performed well on the training data, they encountered significant overfitting and reduced accuracy on unseen data. The derived dataset combined with the gradient boosting model achieved the best performance, with an R² of 0.99 in the training phase and 0.97 in the test phase. This high accuracy is due to the effective extraction of meaningful features that enhance pattern recognition. Example target normalized frequencies of 0.2, 0.6, and 0.9 were used to demonstrate the success of the proposed approach in fine-tuning the perforation configuration to achieve the desired natural frequency.

本研究的目的是通过一种新颖的穿孔技术，通过调整其固有频率来研究悬臂矩形梁的动力行为。该研究旨在通过将机器学习模型与优化算法相结合来优化梁中孔的数量和位置。创建了三个不同的数据集，以捕获射孔模式的几何和统计特征。评估了四种预测模型，包括线性回归、决策树、支持向量回归和梯度增强。然后采用秃鹫优化算法确定达到目标固有频率的最优配置。结果表明，虽然基于二值和十特征数据集的模型在训练数据上表现良好，但它们在未见数据上遇到严重的过拟合和准确性降低。结合梯度提升模型的衍生数据集取得了最好的性能，训练阶段的R²为0.99，测试阶段的R²为0.97。这种高准确性是由于有效地提取了有意义的特征，增强了模式识别。示例目标归一化频率为0.2、0.6和0.9，用于演示该方法在微调射孔配置以获得所需固有频率方面的成功。

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引用次数: 0

A note on the inhomogeneous shear for a class of visco-electro-elastic slab. A parametric study 一类粘-电弹性板的不均匀剪切问题。参数化研究

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-11-24 DOI: 10.1016/j.apples.2025.100276

R. Bustamante , O. Orellana

A boundary value problem is studied for a class of electro-visco-elastic semi-infinite slab, considering constitutive equations, wherein the deviatoric part of the symmetric stress tensor, and the electric displacement, are assumed to be functions of the left Cauchy–Green tensor, the symmetric part of the velocity gradient, and the electric field. The boundary value problem being studied corresponds to a class of inhomogeneous shear for a slab, under the influence of an electric field acting transversely to that body. Two (in general nonlinear) equations are obtained, which can be used to determine the shear deformation and the electric field inside the slab. Considering some further simplifications such equations are reduced to one linear partial differential equation for the shear deformation. The main equation and the different variables are put into dimensionless forms, and the dimensionless equivalent partial differential equation is solved exactly for some particular boundary and initial conditions. Such solutions are still valid for the case of large deformations. Some numerical results are presented, evaluating the exact solution for different values for some of the material parameters of the problem (in dimensionless forms). The main idea is to study the effect of electric fields in the behaviour of the slab.

考虑本构方程，研究了一类电粘弹性半无限大板的边值问题，其中对称应力张量的偏量部分和电位移假定为左柯西-格林张量、速度梯度的对称部分和电场的函数。所研究的边值问题对应于平板在横向电场作用下的一类非均匀剪切。得到了两个（一般的）非线性方程，可用于确定板内的剪切变形和电场。考虑到进一步的简化，这些方程被简化为一个线性偏微分方程。将主方程和各变量化为无因次形式，在特定的边界和初始条件下精确求解了无因次等价偏微分方程。这种解对于大变形的情况仍然有效。给出了一些数值结果，评估了问题的一些材料参数在不同值下的精确解（以无量纲形式）。主要目的是研究电场对板坯性能的影响。

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引用次数: 0

Mechanical analysis of an ultra-light chassis model for a single-seat vehicle 单座汽车超轻型底盘模型力学分析

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-09-06 DOI: 10.1016/j.apples.2025.100260

Brayan Daniel Duran Flores , Edgar Adhair Montes Gómez , Luis Arturo Soriano Avendaño , Miguel Ángel Castellón Medinaceli

The article presents a mechanical analysis of an ultra-light chassis designed for a single-seat vehicle, focusing on weight optimization and energy efficiency. The methodology includes material selection using constraint graphs and mechanical testing, with aluminum 6060 chosen for its favorable strength-to-weight ratio. Tensile and flexural tests were conducted to evaluate the material’s strength, followed by static, dynamic load, and wind tunnel simulations in SOLIDWORKS, validating the aerodynamic and structural design The results show good safety factor distribution throughout the chassis, although a critical component, Element 58 (rear suspension support), has a low safety factor and exceeds the yield limit under maximum load conditions, indicating a need for redesign or reinforcement. Recommendations include increasing the cross-sectional area of the critical element or using a higher-strength material to ensure structural integrity and enhance the vehicle’s overall performance.

本文介绍了一种用于单座汽车的超轻型底盘的力学分析，重点是重量优化和能源效率。方法包括使用约束图和力学测试选择材料，选择铝6060，因为它具有良好的强度与重量比。在SOLIDWORKS中进行了拉伸和弯曲试验以评估材料的强度，随后进行了静态、动态载荷和风洞模拟，验证了空气动力学和结构设计。结果显示，整个底盘的安全系数分布良好，尽管关键部件58号元件（后悬架支架）的安全系数较低，并且在最大载荷条件下超过了屈服极限，表明需要重新设计或加固。建议包括增加关键元件的横截面积或使用更高强度的材料，以确保结构完整性并提高车辆的整体性能。

引用次数: 0

Numerical analysis of solar flat plate collector with cooling chamber partially filled with highly porous metal foams 高多孔金属泡沫部分填充冷却室太阳能平板集热器的数值分析

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-11-17 DOI: 10.1016/j.apples.2025.100275

Syed Mustafkhadri , Banjara Kotresha , Kishan Naik , Shashikumar C M

A 3D numerical experimentation is performed to explore the convection parameters of water flowing via eco-friendly novel cooling channel partially packed with metal foams (MF) using ANSYS Workbench 2022 R2. The foremost goal of the current study is to advance the thermal performance of SFPC (solar flat plate collector) and also its electrical efficiency. For this determination, four different filling rates (H_f = 0.25H, 0.5H, 0.75H and H respectively) and MF of four distinct pores per inch (10, 20, 30 and 45) are considered. The MF is located next to the internal surface of the solar module to augment the heat transfer. In this numerical computation, solar radiation heat flux is kept constant and solar plate is positioned at an inclination equal to latitude of the site. The combined Darcy Extended Forchheimer (DEF) and Local Thermal Equilibrium (LTE) model is employed to envisage the convective heat flow through MF filled solar collector. Initially, the numerical computations are confirmed with the help of literature data and achieved a fairly good agreement. The outcomes show that the peak temperature of SFPC surface is dropped by 24 – 27 °C and also its electrical efficiency is amplified up to 13 - 14 % from 8 – 9 % with the use of MFs. The fall of peak temperature around 25 to 30 °C with 19.50 %, 18.50 %, 17.64 % and 19.74 % in temperature drop is observed for 10, 20, 30 and 45 PPI MFs respectively with regard to non-porous case SFPC. The highest thermal performance was achieved for 45PPI with H_f =0.75H and lowest performance is obtained for 30PPI at H_f =0.25H The enhancement ratio (Er) is much higher for 7 l/min mass flow rate than those for 1, 3 and 5 l/min. Outcomes also exhibit that the 10 and 45 PPI MF stretches 2.72 and 2.68 more heat than non-porous chamber respectively. The 45 PPI MF achieves higher enhancement ratio with respect to all other PPI MF’s and also in all configurations studied.

利用ANSYS Workbench 2022 R2平台，对新型环保型部分填充金属泡沫冷却通道中水流的对流参数进行了三维数值实验研究。当前研究的首要目标是提高SFPC（太阳能平板集热器）的热性能和电效率。为了确定这一点，考虑了四种不同的填充率（Hf分别= 0.25H, 0.5H， 0.75H和H）和每英寸四个不同孔隙（10,20,30和45）的MF。MF位于太阳能组件的内表面附近，以增加热量传递。在此数值计算中，太阳辐射热流保持恒定，太阳板的倾角与站点的纬度相等。结合Darcy Extended Forchheimer （DEF）和局地热平衡（LTE）模型，对MF填充太阳能集热器的对流热流进行了模拟。初步利用文献资料对数值计算结果进行了验证，得到了较好的一致性。结果表明，使用MFs后，SFPC表面的峰值温度降低了24 ~ 27℃，电效率从8 ~ 9%提高到13 ~ 14%。对于无孔SFPC，在10、20、30和45 PPI MFs时，峰值温度在25 ~ 30℃附近分别下降19.50%、18.50%、17.64%和19.74%。当Hf =0.75H时，45PPI的热工性能最高；当Hf =0.25H时，30PPI的热工性能最低。当质量流量为7 l/min时，增强比（Er）显著高于质量流量为1、3和5 l/min时。结果还表明，10和45 PPI MF比无孔腔分别多拉伸2.72和2.68的热量。相对于所有其他PPI MF和所有被研究的配置，45 PPI MF具有更高的增强比。

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引用次数: 0

Study on strain energy evolution characteristics and mechanisms between two types of fissured granites under true triaxial stresses 真三轴应力作用下两类裂隙花岗岩应变能演化特征及机制研究

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-10-12 DOI: 10.1016/j.apples.2025.100269

Jin-Rui Gong , Ming-Fa Huang , Chang-Jun Wang , Wen-Hao Shi

This study examines the strain energy evolution processes and the associated failure behaviors of two types of fissured granite under the influence of true triaxial stresses. Strain energy characteristics are critical to comprehending the deformation and failure mechanisms of rock masses. Utilizing Hunan granite as a representative example, this research focuses on the variations in strain energy rate, strain energy conversion rate, and strain energy values at peak strength (σ_p) across different levels of intermediate principal stress (σ₂). The findings suggest that an escalation of σ₂ enhances the susceptibility of granite to brittle failure. Observations also reveal a reciprocal relationship between the elastic strain energy (U_e) rate and the dissipated strain energy (U_d) during the failure process. Within the same σ₂ condition, the U_e conversion rate consistently exceeds that of U_d prior to reaching crack damage stress. Conversely, beyond this stress threshold, the U_d conversion rate consistently surpasses U_e, particularly under heightened σ₂. The study further unveils that at lower σ₂ values, increased dissipated strain energy variation in the σ₂ direction (U_2d) results in more pronounced energy dissipation and a higher incidence of cracking on the surfaces of pre-existing fissures. In contrast, at elevated σ₂ values, a reduced U_2d variation corresponds to fewer observed cracks and a greater tendency for the rock to fracture along the minimum principal stress (σ₃) direction. The insights gained from this investigation significantly contribute to the field of rock mechanics, particularly concerning the understanding of true triaxial stress behaviors, and bear vital implications for predicting and ensuring rock stability in engineering practices.

研究了真三轴应力作用下两种裂隙花岗岩的应变能演化过程及其破坏行为。应变能特性是理解岩体变形破坏机制的关键。以湖南花岗岩为例，研究了不同中间主应力（σ2）水平下，峰值强度（σp）下的应变能率、应变能转化率和应变能值的变化规律。研究结果表明，σ2的升高会增强花岗岩的脆性破坏敏感性。观察结果还表明，在破坏过程中，弹性应变能（Ue）率与耗散应变能（Ud）之间呈反比关系。在相同的σ2条件下，在达到裂纹损伤应力之前，Ue的转化率始终大于Ud。反之，在此应力阈值之外，Ud的转化率持续高于Ue，特别是在σ2增大的情况下。研究进一步表明，当σ2值较低时，σ2方向（U2d）的耗散应变能变化增大，导致原有裂缝表面的能量耗散更加明显，开裂发生率更高。相反，当σ2值升高时，U2d变化越小，观察到的裂缝越少，岩石沿最小主应力（σ3）方向断裂的趋势越大。从这项研究中获得的见解对岩石力学领域做出了重大贡献，特别是对真三轴应力行为的理解，并对工程实践中预测和确保岩石稳定性具有重要意义。

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引用次数: 0

Assessment of main bearing displacements in the monoblock of a commercial common rail diesel engine 商用共轨柴油机单体主轴承位移的评定

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-08-18 DOI: 10.1016/j.apples.2025.100254

Luca Piancastelli, Irene Giusti, Marella De Santis

This study investigates the structural behavior of the monoblock crankcase of a commercial common rail diesel engine, with a specific focus on the displacements of main bearing housings under realistic operating conditions. A detailed reverse engineering approach was employed to reconstruct the crankcase geometry, followed by finite element simulations of critical load cases derived from combustion pressure and inertial dynamics. The mechanical design criteria of crankcases and hydrodynamic bearing systems are reviewed to define acceptable tolerance ranges and deformation limits. Stress and displacement analyses were conducted across multiple engine operating scenarios to identify critical regions and evaluate the structural integrity of the engine block. Results indicate that the most significant bearing misalignments occur at central supports, suggesting potential areas for reinforcement or design improvement. The findings support the application of precise manufacturing techniques and modular design philosophies to ensure bearing alignment and engine reliability.

本研究研究了商用共轨柴油机单块曲轴箱的结构行为，特别关注了实际运行条件下主轴承座的位移。采用详细的逆向工程方法重建曲轴箱几何形状，然后根据燃烧压力和惯性动力学推导临界载荷情况进行有限元模拟。回顾了曲轴箱和流体动力轴承系统的机械设计准则，以确定可接受的公差范围和变形极限。在多个发动机运行场景下进行应力和位移分析，以确定关键区域并评估发动机机体的结构完整性。结果表明，最显著的轴承错位发生在中心支撑，建议加固或设计改进的潜在领域。研究结果支持精密制造技术和模块化设计理念的应用，以确保轴承对准和发动机的可靠性。

引用次数: 0

Optimal structural design of helical springs with Ludwik-type elastic–plastic materials 路德维克型弹塑性材料螺旋弹簧的优化结构设计

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY

Applications in engineering science

Pub Date : 2025-12-01 Epub Date: 2025-08-21 DOI: 10.1016/j.apples.2025.100259

Dongming Wei , Adilet Otemissov , Xinaer Mandaiye , Shubing Zhao

Motivated by the limitations of idealized power-law assumptions in spring design, this work revisits the optimization of compressive helical springs using a more realistic Ludwik-type elastic–perfect plastic material model. Unlike earlier approaches, we explicitly incorporate the pitch angle in computing the total wire length, improving geometric accuracy. A unified root-solving algorithm is introduced to handle the Karush–Kuhn–Tucker conditions efficiently, eliminating the need for case-by-case treatment. The proposed design is benchmarked against the DIN standard, which is often overlooked in analytical studies. To ensure practical relevance, finite element simulations are performed in COMSOL and show good agreement with theoretical predictions. The combination of refined geometry, nonlinear mechanics, and comparative validation provides a more robust optimization framework that bridges theoretical modeling with engineering practice. We believe this approach offers new insight into spring design for advanced structural materials.

由于弹簧设计中理想化幂律假设的局限性，这项工作使用更现实的路德维克型弹塑性材料模型重新审视了压缩螺旋弹簧的优化。与以前的方法不同，我们明确地将俯角纳入计算总导线长度，提高几何精度。引入统一的解根算法有效地处理Karush-Kuhn-Tucker条件，消除了逐案处理的需要。提出的设计是针对DIN标准的基准，这在分析研究中经常被忽视。为了确保实际的相关性，在COMSOL中进行了有限元模拟，结果与理论预测吻合良好。精细几何、非线性力学和比较验证的结合提供了一个更强大的优化框架，将理论建模与工程实践联系起来。我们相信这种方法为先进结构材料的弹簧设计提供了新的见解。

引用次数: 0