摘要
为了缩短车身结构设计周期,提高薄壁梁骨架模型的建模效率和求解精度,提出了含柔性接头的车身薄壁梁骨架结构概念设计方法。首先,通过详细有限元模型求解接头各分支不同方向的弯曲刚度;然后,将刚度特性赋给弹簧单元模拟梁单元连接位置的柔度;最后,开发相应的建模与分析软件。通过比较详细模型与梁骨架模型的弯扭刚度和自由模态,验证了含有柔性接头的梁骨架模型的有效性,该模型的应用可提高车身结构的正向设计效率。
To shorten the design period of the body structure and improve the modeling efficiency and solving accuracies of the thin-walled beam frame model,this paper proposes the conceptual design method of the automotive body frame structure with thin-walled beams and flexible joints.Firstly,the bending stiffness of each branch of the joint structure in different directions is solved using the detailed finite element model.Then,the stiffness characteristics are assigned to the spring element to simulate the flexibility of the connecting position of the beam element.Finally,the corresponding modeling and analysis software are developed.The torsional stiffness and free mode between the detailed model and the frame model are compared to demonstrate the effectiveness of the frame model with thin-walled beams and flexible joints,which can improve the forward design efficiency of automotive body structure.
作者
吕超
陈自凯
左文杰
Lü Chao;Chen Zikai;Zuo Wenjie(Research Institute(R&D Center),Baoshan Iron&Steel Co.,Ltd.,Shanghai 201900;State Key Laboratory of Development and Application Technology of Automotive Steels(BAOSTEEL),Shanghai 201900;Jilin University,Changchun 130025)
出处
《汽车技术》
CSCD
北大核心
2021年第10期47-52,共6页
Automobile Technology
基金
国家自然科学基金项目(51575226)。
关键词
概念设计
骨架模型
柔性接头
断面形状
扭转惯性矩
Conceptual design
Frame model
Flexible joint
Cross-sectional shape
Torsional moment of inertia
