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针对等静压设备的预应力钢丝缠绕缸体结构的缠绕方法、强度和稳定性理论,定义了一种基于等剪应力缠绕的预应力大型结构轻量化设计模型.结合工作内压为300MPa、缸体内径为500mm的缸体设计实例,利用多岛遗传算法成功地得到了最优化解.质量由传统设计的9.03 t减轻到8.53 t,减少了5.5%.经专家系统软件和有限元软件验证,方案符合结构强度、刚度条件,预紧态结构不屈服,设计不失稳,并满足内径尺寸大于500 mm等设计要求,方案可行.分析表明,该优化模型合理,多岛遗传算法收敛效果好.该方法适用于大吨位、超高温超高压等静压设备的缸体缠绕结构优化问题.
Aiming at the winding method, strength and stability theory of prestressed steel wire winding cylinder structure of isostatic pressing equipment, a light weight design model of large prestressed large structure based on equal shear stress is defined. Combining the working internal pressure of 300MPa, The design example of a cylinder body with inner diameter of 500mm was successfully solved by using multi-island genetic algorithm.The quality was reduced from 9.03t to 8.53t in the traditional design, which was 5.5% less.Through the verification of expert system software and finite element software, The scheme is in accordance with the structural strength and stiffness conditions, the preconditioned structure does not yield, the design does not lose stability, and the design requirements such as the inner diameter of more than 500 mm are satisfied, the scheme is feasible.The analysis shows that the optimization model is reasonable and the multi-island genetic algorithm has good convergence effect. The method is suitable for cylinder winding structure optimization of large tonnage, ultra-high temperature and high pressure isostatic pressing equipment.