论文部分内容阅读
针对传统复摆颚式破碎机产品中存在的机件结构设计不合理、质量偏大、耗材偏多、成本偏高等问题,选择动颚作为优化设计的对象,在建立动颚参数化有限元分析模型的基础上,将近似模型技术引入优化设计中,采用拉丁超立方设计方法建立动颚结构近似模型,继而以动颚的轻量化为目标,以结构尺寸为设计变量,在ISIGHT平台对动颚结构进行优化,得出在满足强度、刚度前提下最小动颚体质量。结果表明,经过优化的动颚质量比原结构减少近1/4,不仅节省材料,降低成本,而且在一定程度上改善了机构的动力学性能,降低了机器的振动和零件的磨损,提高了产品的使用寿命。近似模型误差分析表明,所建立的近似模型精度良好,可代替高精度的有限元仿真模型进行优化设计,为破碎机的优化设计提供了一种高效可行的方法。
Aiming at the problems of unreasonable mechanical structure design, large mass, too many consumables and high cost in traditional complex pendulum jaw crusher products, the choice of moving jaw as the object of optimization design, the establishment of dynamic jaw parametric finite element analysis Based on the model, the approximate model is introduced into the optimization design, and the approximate model of the dynamic jaw structure is established by using the Latin hypercube design method. Then the target of the light jaw of the movable jaw is taken as the goal, the structural dimension is used as the design variable, Structure optimization, come to meet the strength, stiffness under the premise of the minimum moving jaw mass. The results show that the optimized moving jaw mass is nearly 1/4 less than the original one, which not only saves the material and reduces the cost, but also improves the dynamic performance of the mechanism to a certain extent, reduces the vibration of the machine and the wear of the part, Product life. Approximate model error analysis shows that the approximate model established is accurate and can replace the high-precision finite element simulation model to optimize the design, which provides a highly efficient and feasible method for the optimal design of the crusher.