液压挖掘机工作装置斗杆钢结构有限元分析（本科毕业论文设计）.doc
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液压挖掘机工作装置斗杆钢结构有限元分析（本科毕业论文设计）,摘 要本设计主要对两种典型工况下液压挖掘机反铲装置斗杆钢结构的受力进行了有限元分析。首先，计算出两种工况位置下斗杆所受的外力，以此作为有限元分析的外载荷。然后采用pro/e软件对斗杆钢结构进行三维建模，并导入到ansys软件中进行有限元分析。最后根据静强度分析结果，对两种工况进行比较，再分别找出两种工况下受力斗杆的最大...
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摘 要
本设计主要对两种典型工况下液压挖掘机反铲装置斗杆钢结构的受力进行了有限元分析。首先，计算出两种工况位置下斗杆所受的外力，以此作为有限元分析的外载荷。然后采用PRO/E软件对斗杆钢结构进行三维建模，并导入到ANSYS软件中进行有限元分析。最后根据静强度分析结果，对两种工况进行比较，再分别找出两种工况下受力斗杆的最大应力位置，并对现行设计提出改进措施。
为了有利于分析，文中对斗杆钢结构得模型采取了一些简化措施。针对斗杆结构的复杂程度，选用四面体单元及壳单元对模型进行网络划分。对铰销间接触载荷的处理时，假设载荷在X—Y平面180°范围内按余弦分布，轴向均匀分布，以使其受力尽量符合实际。整个分析取得了良好得效果。
关键词：液压挖掘机，有限元分析，斗杆，ANSYS
ABSTRACT
In this paper,author mostly andlysed the stress of backhoe shovel device of hydraulic excavator under two kinds of typical condition with finite element method. First of all,figured out the external forces of bucket arm under the amphi-condition,and took this forces as the external loads of finite element analysis.Then built up the 3D moldof bucket arm with software PRO/E Finally,according to the analytic result of bucket arm’s static steength,compared the result under amphi-condition and found out the maximum steess position of bucket arm under amphi-condition respectively,and author brought out the improvement advice of product.
Author adopted some measures to simplify the bucket arm so that in favor of the finite element analysis.Because of the complexfity level of the structural of bucket arm,arthor took tetrahedral element and shell element to mesh the mold. In order to make the force as soon as possible accord with reality,when deal with contact load between the pin and the hole,author assumed the loads sperad by cosine within 180°of the x – y plane and rectangular distribution towards axial direction. Towards axial direction. Whole analyses procured a satisfying effect.
Keywords: Hydraulic Wxcavator,Finite Element Analysis,Bucket Arm,ANSYS
本设计主要对两种典型工况下液压挖掘机反铲装置斗杆钢结构的受力进行了有限元分析。首先，计算出两种工况位置下斗杆所受的外力，以此作为有限元分析的外载荷。然后采用PRO/E软件对斗杆钢结构进行三维建模，并导入到ANSYS软件中进行有限元分析。最后根据静强度分析结果，对两种工况进行比较，再分别找出两种工况下受力斗杆的最大应力位置，并对现行设计提出改进措施。
为了有利于分析，文中对斗杆钢结构得模型采取了一些简化措施。针对斗杆结构的复杂程度，选用四面体单元及壳单元对模型进行网络划分。对铰销间接触载荷的处理时，假设载荷在X—Y平面180°范围内按余弦分布，轴向均匀分布，以使其受力尽量符合实际。整个分析取得了良好得效果。
关键词：液压挖掘机，有限元分析，斗杆，ANSYS
ABSTRACT
In this paper,author mostly andlysed the stress of backhoe shovel device of hydraulic excavator under two kinds of typical condition with finite element method. First of all,figured out the external forces of bucket arm under the amphi-condition,and took this forces as the external loads of finite element analysis.Then built up the 3D moldof bucket arm with software PRO/E Finally,according to the analytic result of bucket arm’s static steength,compared the result under amphi-condition and found out the maximum steess position of bucket arm under amphi-condition respectively,and author brought out the improvement advice of product.
Author adopted some measures to simplify the bucket arm so that in favor of the finite element analysis.Because of the complexfity level of the structural of bucket arm,arthor took tetrahedral element and shell element to mesh the mold. In order to make the force as soon as possible accord with reality,when deal with contact load between the pin and the hole,author assumed the loads sperad by cosine within 180°of the x – y plane and rectangular distribution towards axial direction. Towards axial direction. Whole analyses procured a satisfying effect.
Keywords: Hydraulic Wxcavator,Finite Element Analysis,Bucket Arm,ANSYS
