挤压机板焊柱塞结构强度计算及优化设计
Strength Calculation and Optimal Design of Structure of Plate Welded Plunger for Extruder
苏芳 1王晓磊 1田萃1
作者信息
- 1. 太原重工股份有限公司,山西 太原 030024;太重(天津)滨海重型机械有限公司,天津 300452
- 折叠
摘要
柱塞在挤压机工作时要承受很大的应力,设计时必须进行强度计算及校核.相比于传统锻焊式柱塞,板焊式柱塞在减轻自重的同时也更容易出现应力集中.对柱塞主结构进行受力分析,提取其主要载荷,使用弹性力学厚壁圆筒理论对柱塞结构中段进行强度计算,推导出第四强度理论下的等效应力计算公式.根据计算结果提出三个加筋方案,并使用有限元法分别对加筋后的柱塞结构进行强度计算,模拟柱塞受载后应力状态,校核强度并分析讨论最适合生产制造的设计方案.
Abstract
The plunger will bear great stress when the extruder is working,so the strength calculation and check must be carried out in the design.Compared with the traditional forge welded plunger,the plate welded plunger is more prone to stress concentration while lightening self-weight.The force analysis of the main structure of the plunger is carried out,the main load is extracted,and the strength calculation of the middle section of the plunger structure is carried out by means of the elastic mechanics theory of thick-walled cylinder,and the equivalent stress calculation formula under the fourth strength theory is derived.According to the calculation results,three reinforced schemes are put forward,and the strength of the reinforced plunger structure is calculated with the finite element method,the stress state of the plunger under load is simulated,the strength is checked,and the most suitable design scheme for production and manufacture is analyzed and discussed.
关键词
挤压机/板焊柱塞/等效应力/强度计算Key words
extruder/plate welded plunger/equivalent stress/strength calculation引用本文复制引用
基金项目
天津市科技领军(培育)企业认定及支持项目(20YDLZGX00290)
天津市"项目+团队"重点培养专项(XC202050)
出版年
2024
NETL
NSTL
万方数据