高温-多工况下自动焊接小车车架强度优化及分析

Strength Optimal and Analysis of Automatic Welding Trolley Frame Under High Temperature-Multiple Operating Conditions

车架为运载机械的主要部件,其强度影响了运载机械的安全性。将SolidWorks所建车架的三维模型进行适当简化,导入ABAQUS中建立有限元模型。分析车架在高温下的满载启动、满载弯扭复合、满载横移以及不同制动加速度紧急制动工况下的应力以及应变,结果表明:在横移工况下应力值最大,为834.8MPa;最大应变出现在制动加速度为100m/s^2时的紧急制动工况下,值为0.656mm。对车架进行改良后,在多数工况下的最大应力及位移都有不同程度的减少,可为之后车架的优化奠定基础。

As the most important part of transportation machinery,the strength of frame decides the security of transportation machinery.Simplified the characteristic of the frame which is established by SolidWorks before introduce into ABAQUS.Analyzing the stress and strain of the frame in high temperature environment under full start,bending-torsion complex,traverse and emergency braking with different accelerations conditions.By analyzing the nephogram we know that the maximum stress exists in traverse condition which is 834.8 MPa.The maximum strain is 0.656 mm under the emergency braking condition with the acceleration is 100 m/s^2.The maximum stress and displacement decrease differently after the frame is enhanced.Proposed theoretical basis for optimizationscheme.