Optimal Cross-section of Cross Member for Increased Torsional and Bending Stiffness of Ladder Frame Chassis

2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST) Pub Date : 2019-01-01 DOI:10.1109/IBCAST.2019.8667195

Waqas Afzal, Dr. Rizwan Alim Mufti

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引用次数: 2

Abstract

Due to the development of CPEC and increasing demand of transporting goods through the mountain ranges, need for improvement in torsional stiffness of chassis has developed. In Pakistan most of the trucks that transport goods have ladder frame chassis. In this research, study is performed to determine the optimum cross-section for cross member that will result in increased torsional and bending stiffness of ladder frame. For this research, firstly existing model with C channel for main member and cross member was analyzed using ANSYS Workbench to determine the torsional and bending stiffness. Torsional and bending stiffness for existing model was 1.6kNm/deg and 5447 kN/m respectively. This analysis was repeated for five different cross-sections of cross members that include I-beam, rectangular hollow and circular hollow, square hollow and hexagonal without changing the location of cross members and cross-section of main member was kept same. Results of the analysis showed that both the torsional and bending stiffness was highest for hexagonal hollow cross-section of cross member.

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提高梯架底盘抗扭和抗弯刚度的最优横截面

由于中巴经济走廊的发展和山区货物运输需求的增加，对底盘抗扭刚度的改进需求也随之增加。在巴基斯坦，大多数运输货物的卡车都有梯架底盘。在本研究中，进行了研究，以确定最佳横截面的横梁，将导致增加的扭转和弯曲刚度的梯架。在本研究中，首先利用ANSYS Workbench对既有主构件和交叉构件采用C形通道的模型进行分析，确定其扭转刚度和弯曲刚度;现有模型抗扭刚度为1.6kN /度，抗弯刚度为5447 kN/m。在保持主构件截面不变的情况下，对工字梁、矩形空心和圆形空心、方空心和六角形五种不同截面的横梁构件进行重复分析。分析结果表明，六角形空心截面构件的抗扭刚度和抗弯刚度均最高。

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2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)

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