单柱式液压机机身结构静强度相似设计研究  

Similar Design Research of Single Column Hydraulic Machine's Static Strength

作　　者：商烁[1] 罗忠[2] 陈晓兵 黄重国[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]东北大学机械工程与自动化学院,辽宁沈阳110819 [3]沈阳明日航材设备技术有限公司,辽宁沈阳110000

出　　处：《机械设计与制造》2016年第8期35-38,共4页Machinery Design & Manufacture

摘　　要：针对单柱式液压机机身结构静强度相似问题,基于相似理论,采用方程分析法,建立了单柱式液压机刚度及强度相似关系;以某型号双缸单柱式液压机为研究对象,采用七种不同相似模型,分别计算各相似模型关键部位的变形量及应力值,并对原型进行预测,结果表明同种工况下,完全几何相似模型可以准确预测出原型变形量及应力值;不完全几何相似模型对原型的预测误差在10%以内,验证了所建立相似关系的准确性,研究结果可为单柱式液压机机身结构静强度相似设计提供理论依据。Based on the similarity theory, using the equation analysis,establish a similar relations between single column hydraulic machine stiffness and strength to solve similar problems of single-column hydraulic machine＇s fuselage structural static strength. In a single-column hydraulic press cylinder model as the research object, using seven different similarity model, calculated the amount of deformation and stress numerical of every similar model＇s key parts, and to predict the prototype. The results showed that in the same kinds of conditions, completely geometrically similar model can accurately predict the amount of deformation and stress prototype. Incomplete geometrically similar model＇s prediction error is less than 10%. Verify the accuracy of the similar relations which this article established. The results can provide a theoretical basis for the series design of single column hydraulic machine.

关 键 词：单柱式液压机 刚度 强度 相似理论 相似模型 相似设计 

分 类 号：TH122[机械工程—机械设计及理论]