Strength and stability analysis of composite inverted conical structure

IF 2.7 3区材料科学 Q2 ENGINEERING, MECHANICAL International Journal of Mechanics and Materials in Design Pub Date : 2024-08-12 DOI:10.1007/s10999-024-09723-7

Surekha Gnanasekar, B. Santhosh, Vasudevan Rajamohan, Vivek Raj, Hariharan Elangovan, Venugopal Barathan

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Abstract

The present study focuses on the numerical and experimental investigation of a hat-stiffened composite inverted conical structure to identify its strength and stability under axial compressive loading conditions. A new design for the 3rd stage adapter with few changes in the present polar satellite launch vehicles launch vehicle is considered. An inverted conical structure with a hat-stiffened type of construction is used to obtain the higher bending stiffness. Both high-modulus and low-modulus uni-directional carbon prepreg are considered for the inverted conical structure. The experimental and numerical study is carried out on a hat-stiffened panel with a low-modulus carbon fiber prepreg material. Using the commercial software CATIA^®, the geometry of the inverted conical structure and hat-stiffened panel is generated. The structural analysis is carried out using MSC NASTRAN/PATRAN^® to determine the maximum load-carrying capacity, maximum stress and displacement values. It was observed that the strain obtained experimentally on the surface of the stiffened panel at twenty-six points using the 26-strain gauges shows good correlations with those obtained numerically.

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倒锥形复合结构的强度和稳定性分析

本研究的重点是对帽形加固复合倒锥形结构进行数值和实验研究，以确定其在轴向压缩载荷条件下的强度和稳定性。本研究考虑对目前极地卫星运载火箭的第三级适配器进行新的设计，只做少量改动。为了获得更高的弯曲刚度，采用了一种帽子加固型的倒锥形结构。高模量和低模量单向碳预浸料都被考虑用于倒锥形结构。实验和数值研究是针对使用低模量碳纤维预浸料的帽形加劲板进行的。使用商业软件 CATIA® 生成了倒锥形结构和帽状加固面板的几何形状。使用 MSC NASTRAN/PATRAN® 进行结构分析，以确定最大承载能力、最大应力和位移值。结果表明，使用 26 个应变片在加劲板表面 26 个点上实验获得的应变与数值分析获得的应变具有良好的相关性。

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来源期刊

International Journal of Mechanics and Materials in Design ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

6.00

自引率

5.40%

发文量

审稿时长

>12 weeks

期刊介绍： It is the objective of this journal to provide an effective medium for the dissemination of recent advances and original works in mechanics and materials'' engineering and their impact on the design process in an integrated, highly focused and coherent format. The goal is to enable mechanical, aeronautical, civil, automotive, biomedical, chemical and nuclear engineers, researchers and scientists to keep abreast of recent developments and exchange ideas on a number of topics relating to the use of mechanics and materials in design. Analytical synopsis of contents: The following non-exhaustive list is considered to be within the scope of the International Journal of Mechanics and Materials in Design: Intelligent Design: Nano-engineering and Nano-science in Design; Smart Materials and Adaptive Structures in Design; Mechanism(s) Design; Design against Failure; Design for Manufacturing; Design of Ultralight Structures; Design for a Clean Environment; Impact and Crashworthiness; Microelectronic Packaging Systems. Advanced Materials in Design: Newly Engineered Materials; Smart Materials and Adaptive Structures; Micromechanical Modelling of Composites; Damage Characterisation of Advanced/Traditional Materials; Alternative Use of Traditional Materials in Design; Functionally Graded Materials; Failure Analysis: Fatigue and Fracture; Multiscale Modelling Concepts and Methodology; Interfaces, interfacial properties and characterisation. Design Analysis and Optimisation: Shape and Topology Optimisation; Structural Optimisation; Optimisation Algorithms in Design; Nonlinear Mechanics in Design; Novel Numerical Tools in Design; Geometric Modelling and CAD Tools in Design; FEM, BEM and Hybrid Methods; Integrated Computer Aided Design; Computational Failure Analysis; Coupled Thermo-Electro-Mechanical Designs.