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ID:59595679
大小:364.00 KB
页数:10页
时间:2020-11-14
《材料力学简介(英文)教学内容.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、材料力学简介(英文)1.TheresearchobjectofMechanicsofMaterialsStructuremembersClassificationofstructuremembers:plateorshellclumpbodybarorrod2.ThetaskofMechanicsofMaterialsanditsrelationwithengineeringStrength,Rigidity,StabilityStrength:Capacitytoresistfailureofacomponentoranelement.Rigidity
2、:Capacitytoresistdeformationsofacomponentoranelement.Stability:Capacitytoremaintheoriginalstateinequilibriumofacomponentoranelement.ThetasksofmechanicsofmaterialsUndertherequestthatthestrength,rigidity,stabilityaresatisfied,offerthenecessarytheoreticalfoundationandcalculationmeth
3、odfordeterminingreasonableshapesanddimensions,choosingpropermaterialsforthecomponentsatthemosteconomicprice.3.Thepropertiesandthefundmentalassumptionsofthesoliddeformablebodies1.Continuity:Thematerialofasoliddeformablebodyiscontinuouslydistributedoveritsvolumesothattherearenotany
4、cracks,defectsorholesetc.2.Homogeneity:Thematerialofthesoliddeformablebodyishomogeneouslydistributedoveritsvolume.3.Isotropy:Themechanicalpropertiesarethesameinalldirectionsatapoint.4.Smalldeformations:Thedeformationsforasoliddeformablecausedbyexternalforcesareverysmallcomparedwi
5、ththedimensionsofthebody.Thuswhenwestudytheequilibriumandmotionofthesoliddeformablebody,thedeformationofthebodymaybeneglected.4.Basictypesofthedeformationofrods1.Axialtension2.Shear3.Torsion4.BendingThankYou!此课件下载可自行编辑修改,仅供参考!感谢您的支持,我们努力做得更好!谢谢
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