论文标题
考虑金属添加剂制造的失真，自支撑拓扑优化
Self-support topology optimization considering distortion for metal additive manufacturing
论文作者
论文摘要
本文提出了一种自支撑拓扑优化方法，该方法考虑了变形以改善添加剂的制造性。首先，提出了一个自支撑约束，将悬垂角度约束与可调式滴水效果和可调节程度的热量限制结合在一起。接下来，我们在建筑过程中基于固有的应变方法引入机械模型，并提出可以抑制失真的约束。制定了优化问题以满足所有约束，并构建了基于基于级别的拓扑优化的优化算法。最后，提出了二维优化示例，以验证提出的拓扑优化方法的有效性。
This paper proposes a self-support topology optimization method that considers distortion to improve the manufacturability of additive manufacturing. First, a self-support constraint is proposed that combines an overhang angle constraint with an adjustable degree of the dripping effect and a thermal constraint for heat dissipation in the building process. Next, we introduce a mechanical model based on the inherent strain method in the building process and propose a constraint that can suppress distortion. An optimization problem is formulated to satisfy all constraints, and an optimization algorithm based on level-set-based topology optimization is constructed. Finally, two- and three-dimensional optimization examples are presented to validate the effectiveness of the proposed topology optimization method.
