论文标题
考虑关节故障的组件的同时拓扑和紧固件布局优化
Simultaneous topology and fastener layout optimization of assemblies considering joint failure
论文作者
论文摘要
本文提供了一种在组装中同时拓扑及其相应关节位置的拓扑优化的方法。在其中，关节位置不是离散和预定义的，而是连续移动的。底层耦合方程式允许连接不同的网格，并避免在关节位置发生变化时需要重新安排。提出的方法不仅通过使用单个弹簧元素，而且是关节的大小和类型来模拟关节位置的力传递。在考虑铆接或螺栓接缝时，关节位置的局部几何形状由被物质包围的孔组成。对于点焊缝，关节位置充满了材料，可能比螺栓小。提出的方法将这些材料和间隙区域纳入了零件的同时运行拓扑优化。此外，可以在优化阶段考虑关节的故障，从而产生以故障安全方式连接的组件。
This paper provides a method for the simultaneous topology optimization of parts and their corresponding joint locations in an assembly. Therein, the joint locations are not discrete and predefined, but continuously movable. The underlying coupling equations allow for connecting dissimilar meshes and avoid the need for remeshing when joint locations change. The presented method models the force transfer at a joint location not only by using single spring elements but accounts for the size and type of the joints. When considering riveted or bolted joints, the local part geometry at the joint location consists of holes that are surrounded by material. For spot welds, the joint locations are filled with material and may be smaller than for bolts. The presented method incorporates these material and clearance zones into the simultaneously running topology optimization of the parts. Furthermore, failure of joints may be taken into account at the optimization stage, yielding assemblies connected in a fail-safe manner.
