有限元分析作业报告英文版.docx

有限元分析及应用上机实验报告学院：机电工程学院专业：机械工程班级：硕士1606班姓名：钱树生学号：163712160指导教师：李毅波日期：2016.12.02QuestionFig.1.Schematic diagram of herringbone roof truss.Question:The geometric dimensions of the chevron roof is shown in Fig.1,you should analyze it by statics，as a result you should give the displacement and axial force and axial force diagram of the deformation diagram.Conditions:The ends of the roof truss were fixed,the sectional area of the truss is 0.01m2,elastic modulus is2.0×1011 N/m2,poissons ratio is 0.3.The software usedANSYS Finite element software(APDL 15.0)Solving processPoint1 was choosed as the Coordinate point, horizontal to the right was the X axis，the upright direction is choosed as the Yaxis to create a coordinate system. The nodes was numberedas shown in Figure 1，node 1 and node 5 was fixed，and the force on node 6,7,8was is 1k N，the direction is opposite to the Y-axis3.1 The preparatory work before analysis （1）Specify the new file name. Select UtilityMenu FileChange Jobname, then pop-up the dialog boxChange Jobname,inputthe the working file name ‘2D-sp’ in the Enter New Jobname, click OKto finish the difinition, as shown in Fig.2.Fig.2.The difinition of working file name.（2）Specify a new title.SelectUtilityMenuFileChange Title，then pop-up the dialog boxChange Title,inputthe the file name ‘2D-sp pro’ in theEnter New Title,click OKto finish the difinition, as shown in Fig.3.Fig.3.The difinition of file name.（3）Re-refresh the graphics window.Select UtilityMenuPlotReplot, the defined information was displayed in the graphics window.（4）Define the structural analysis.Run the main menuMain MenuPreferences，then choose the Structural,clickOK to complete the definition of the analysis type , as shown in Fig.4.Fig.4. The definition of the structural analysis.3.2 Define the element typeRun the main menu Main MenuPreprocessorElement TypeAdd,then pop-up the dialog boxElement Types,click the button Addtobuild anew element type, then pop-up the dialog boxLibrary of Element Types,c