abaqus有限元分析简支梁解析

1.梁C的主要参数：其中：梁长3000mm，高为406mm，上下部保护层厚度为38mm，纵筋端部保护层厚度为25mm抗压强度：35.1MPa抗拉强度：2.721MPa受拉钢筋为2Y16，受压钢筋为2Y9.5，屈服强度均为440MPa箍筋：Y7@102，屈服强度为596MPa2.混凝土及钢筋的本构关系1、运用陈光明老师的论文（Chenetal.2011）来确定混凝土的本构关系：受压强度：其中=28020，，2、受压强度与开裂位移的相互关系：其中3、损伤因子：其中e=10（选取网格为10mm）4、钢筋取理想弹塑性5、名义应力应变和真实应力及对数应变的转换：6、混凝土最终输入的本构关系如下：compressivebehaviortensilebehaviortensiondamageyieldstressinelasticstrainyieldstressdisplacementparameterdisplacement21.5027403602.72100025.563592812.72247E-052.6835568820.00031290.187664920.000312928.884773368.85105E-052.6466283190.00062580.319026090.000625831.435018840.0001772782.6102105080.00093870.416069330.000938733.249515370.0002922712.5742995620.00125160.490652370.001251634.407876730.0004306482.5388915150.00156450.549734630.001564535.012031810.0005887722.5039823270.00187740.59766980.001877435.168721060.0007628332.469567890.00219030.637320970.002190334.978055480.0009492592.4356440290.00250320.670648270.002503234.527492040.0011449282.4022065120.00281610.699038850.002816133.889736490.0013472452.3692510480.0031290.723501940.00312933.173508980.0015411852.3367732940.00344190.744789410.003441932.381735080.0017377922.304768860.00375480.763472840.003754831.5436769330.681617990.0019360230.0021350822.273233312.2421621670.00406770.00438060.779994510.794702050.00406770.004380629.812239710.0023343742.2115509160.00469350.80787240.004693528.947808230.0025334612.1813950110.00500640.819728980.005006428.097158680.0027320282.1516898710.00531930.830453970.005319327.266490410.0029298542.122430890.00563220.840197450.005632226.459997920.0031267882.0936134360.00594510.849084130.005945125.680364580.0033227362.0652328570.0062580.857218520.00625824.92914530.0035176411.8115297940.009294840.910442310.0092948424.207060880.0037114781.5942285570.012331680.938747480.0123316823.514222920.0039042441.4090741380.015368520.955771450.0153685222.850304860.0040959491.2519898770.018405360.966807250.0184053622.214671440.0042866161.1191646860.02144220.974332780.021442221.606476160.0044762761.0071042620.024479040.979657640.0244790421.024734250.0046649630.9126557650.027515880.983535050.0275158819.466151990.0052111360.833013350.030552720.986425830.0305527218.096495730.0057503250.765710270.033589560.988625330.0335895616.889240560.0062834790.708601940.03662640.990329810.036626415.820798970.0068114380.6598432810.039663240.991673390.0396632414.870922570.0073349260.6178628260.042700080.99274980.0427000814.02251450.0078545530.5813354270.045736920.993625740.0457369213.261240680.0083708310.5491548630.048773760.99434940.0487737612.575106340.0088841880.5204072880.05181060.9949560.051810611.954064090.0093949840.4943461110.054847440.995471540.0548474411.389674850.0099035180.4703687070.057884280.995915420.0578842810.87482430.0104100470.4479951660.060921120.99630220.0609211210.403489570.0109147840.4268491510.063957960.996642880.063957969.9705488860.0114179130.4066408760.06699480.996945860.06699489.5716268130.011919590.3871521190.070031640.997217570.070031649.2029683920.012419950.3682231540.073068480.997462980.073068488.8613366970.0129191080.3497414790.076105320.997685950.076105328.5439291790.0134171640.3316321530.079142160.997889540.079142168.2483091390.0139142060.3138496230.0821790.998076150.0821797.9723493610.014410310.2963708440.085215840.998247730.085215847.7141855790.0149055420.2791895620.088252680.998405860.088252687.4721778770.0153999620.2623116130.091289520.998551850.091289527.2448785520.0158936210.2457510870.094326360.998686780.094326367.031005230.0163865650.2295272570.09736320.998811580.09736326.8294182890.0168788350.213662150.100400040.998927060.100400046.6391018290.0173704680.198178660.103436880.999033930.103436886.4591475480.0178614960.1830991140.106473720.999132810.106473726.288741050.0183519480.1684442240.109510560.999224270.109510566.1271501560.0188418510.1542323470.11254740.999308830.11254745.9737149020.0193312290.1404789960.115584240.999386950.115584245.8278389465.6889821540.0198201040.0203084930.1271965570.114394170.118621080.121657920.999459090.999525640.118621080.121657925.5566541950.0207964170.1020777240.124694760.9995870.124694765.4304089830.0212838890.090249960.12773160.999643520.12773165.3098398350.0217709270.0789106320.130768440.999695530.130768445.1945752520.0222575410.0680567270.133805280.999743350.133805280.0576827050.136842120.999787290.136842120.0477807710.139878960.999827630.139878960.0383411460.14291580.999864610.14291580.029352340.145952640.999898510.145952643.建模过程Part梁和垫块选择shell，钢筋选择wireProperty混凝土：density以及Elastic的数值参考老师的论文Concretedamagedplasticity：数值为前面的本构关系值。粘性参数取0.0005截面的定义：梁及垫块类型选择均质实体，钢筋类型选择桁架箍筋被赋予截面属性：AssemblyStep建立名为Step-1的分析步Interaction约束有几种情况对垫块与梁的相互作用，选择tie参考点的相互作用，选择coupling对钢筋整体与梁的相互作用，选择embeddedregion约束后的效果图：Load各分析步设置过程：加载方式采用位移加载，对模型进行过“-12”“-10”“-7”“-5”的加载对于下垫块的约束为约束垫块中点的Y轴（选择U2），梁右边约束X轴（选择U1）。约束后的梁示意图：8、Mesh先对梁结构形式进行转变：进行布种：划分网格后效果图：对钢筋骨架形式进行修改：9、Job提交工作过程：4.结果输出位移加载值为-10mm，单元为10mm时的结果：不使用混凝土“粘性参数”时生成的裂缝：使用混凝土粘性参数=0.0005时生成的裂缝:荷载-位移图:受拉区混凝土应力-应变图:受压区混凝土应力-应变图:箍筋应力-应变图：受拉钢筋应力-应变图：受压钢筋应力-应变图：5. 心得体会 决胜全面小康心得体会学党史心得下载党史学习心得下载军训心得免费下载党史学习心得下载 ：经过两个月的学习，对于abaqus有了初步的认识，熟悉了大概的操作。从刚开始按照参考书上的三维案例自己建模，熟悉操作过程，到自己摸索二维建模，和同学讨论中间遇到的各种问题，让我对abaqus有了更深入的认识，了解到了abaqus计算能力的强大，也为以后继续学习abaqus打下了基础。在这里谈谈自己的一些 心得 信息技术培训心得 下载关于七一讲话心得体会关于国企改革心得体会关于使用希沃白板的心得体会国培计划培训心得体会 体会，通过以上的学习和老师上课的讲解，让我了解到力学基础知识的重要性，尤其是老师的讲解，对力学基本问题的分析，使我认识到自己本科学习的知识是很浅显的，这里还有非常多我不了解的知识，未来可以慢慢学习研究。对于abaqus的本构关系中，输入的各种应力应变值、损伤因子等，也是以前没有深入了解过的。在确定本构关系后，我对于各种位移加载值和不同的网格进行了20多次计算，位移加载值从-5mm到-20mm都进行过计算，最初总是input文件出错，在调整过多次模型后，还是出错，在最终调整了多次本构数值后才能计算。然后计算也多次不收敛，在刘迪同学的帮助下，添加了粘性参数后，计算才收敛。继续计算了多次，尝试了不同的位移加载值，才使得受拉筋屈服。对于建模及之后计算过程中遇到的问题，要感谢陈老师、刘迪、罗若帆及王道耀同学的帮助和指导。通过此次作业，让我有机会能接触到abaqus这种有限元软件，并且指明了以后的专业学习和abaqus学习的方向。