基于力学性能安全的ATV桁架式车身轻量化设计

doi:10.3969/j.issn.1674-8484.2024.06.003

摘要/Abstract

摘要：

针对特种全地形车（ATV）桁架式车身安全与轻量化需求，该文提出协同静动态力学性能轻量化方法，开展某特种ATV桁架式车身轻量化设计。通过有限元分析获取车身结构静动态力学特性，建立基于力学性能安全的ATV桁架式车身轻量化优化模型；结合灵敏度分析和主效应分析提取桁架式车身关键设计变量，开展试验设计获取轻量化设计样本点，构建最小二乘法（LSR） -径向基函数（RBF）混合代理模型，提出协同静动态力学性能轻量化优化策略，通过序列二次规划（SQP）算法优化获取ATV桁架式车身轻量化设计方案。结果表明，在保证静动态力学性能条件下，该方法能有效降低ATV桁架式车身质量3.82%。

关键词: 特种全地形车（ATV）, 桁架式车身, 轻量化, 耐撞性

Abstract:

Aiming at the safety and lightweight requirements of all-terrain vehicle (ATV) truss body, a lightweight method of collaborative static and dynamic mechanical properties was proposed to carry out the lightweight design of the ATV truss body. The body structure's static and dynamic mechanical properties were obtained by finite element analysis, and the lightweight optimization model of the ATV truss body based on mechanical performance safety was established. Combined with sensitivity analysis and main effect analysis, the key design variables of the truss body were extracted, the sample points of lightweight design were obtained by experimental design, and the least square method (LSR) -radial basis function (RBF) hybrid surrogate model was constructed. The lightweight optimization strategy of collaborative static and dynamic mechanical properties was proposed, and the lightweight design scheme of ATV truss body was optimized by sequential quadratic programming (SQP) algorithm. The results show that the method can effectively reduce the mass of ATV truss body by 3.82% under the condition of ensuring static and dynamic mechanical properties.

Key words: all-terrain vehicle (ATV), truss body, lightweight, crashworthiness

中图分类号:

U463.82

包宏立, 陆思思, 刘曾禹, 闫凯波, 朱文青, 舒洋. 基于力学性能安全的ATV桁架式车身轻量化设计[J]. 汽车安全与节能学报, 2024, 15(6): 821-829.

BAO Hongli, LU Sisi, LIU Zengyu, YAN Kaibo, ZHU Wenqing, SHU Yang. Lightweight design of ATV truss body based on mechanical performance safety[J]. Journal of Automotive Safety and Energy, 2024, 15(6): 821-829.

图/表 14

参考文献 17

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材料	ρ / (g·m^-3)	v	E / GPa	σ_s/ MPa
Q345	7.85	0.28	206	361
DP980	7.83	0.30	210	789

材料	ρ / (g·m^-3)	v	E / GPa	σ_s/ MPa
Q345	7.85	0.28	206	361
DP980	7.83	0.30	210	789

弯曲刚度，S_B	44.67 kN / mm
扭转刚度，S_T	24 120.14 (kN·mm) / rad
固有频率，f	11.00 Hz
整车最大变形量，D_d	139.63 mm
峰值接触力，F_c	1 579.37 kN

弯曲刚度，S_B	44.67 kN / mm
扭转刚度，S_T	24 120.14 (kN·mm) / rad
固有频率，f	11.00 Hz
整车最大变形量，D_d	139.63 mm
峰值接触力，F_c	1 579.37 kN

设计变量	质量响应	频率响应	弯曲刚度响应	扭转刚度响应	结果
T21	1	1	1	1	4
T22	1	1	1	1	4
T24	1	1	1	1	4
T30	1	1	1	1	4
T42	1	1	1	1	4
T1	1	0	1	1	3
T4	1	1	1	0	3
T7	0	1	1	1	3
T10	1	1	0	1	3
T11	1	1	1	0	3
T16	0	1	1	1	3
T19	1	0	1	1	3
T23	1	1	1	0	3
T28	0	1	1	1	3
T29	0	1	1	1	3
T35	1	1	0	1	3
T40	1	1	0	1	3
T45	1	1	0	1	3
T50	0	1	1	1	3
T51	0	1	1	1	3