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596MPa

2.混凝土及钢筋的本构关系

1、运用陈光明老师的论文（Chen et al. 2011）来确定混凝土的本构关系： 受压强度：

其中C a E ==28020，c f ρσ'=，0.002ρε= 2、受压强度与开裂位移的相互关系：

其中123.0, 6.93c c == 3、损伤因子：

其中2c h e = 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：

ln (1)

ln(1)true nom nom Pl

true

nom E

σσεσεε=+=+- 6、混凝土最终输入的本构关系如下：

compressive behavior

tensile behavior

tension damage

yield stress inelastic strain yield stress displacement parameter displacement

21.50274036 0

2.721 0

25.56359281 2.72247E-05 2.683556882 0.0003129 0.18766492 0.0003129 28.88477336 8.85105E-05 2.646628319 0.0006258 0.31902609 0.0006258 31.43501884 0.000177278 2.610210508 0.0009387 0.41606933 0.0009387 33.24951537 0.000292271 2.574299562 0.0012516 0.49065237 0.0012516 34.40787673 0.000430648 2.538891515 0.0015645 0.54973463 0.0015645 35.01203181 0.000588772 2.503982327 0.0018774 0.5976698 0.0018774 35.16872106 0.000762833 2.46956789 0.0021903 0.63732097 0.0021903 34.97805548 0.000949259 2.435644029 0.0025032 0.67064827 0.0025032 34.52749204 0.001144928 2.402206512 0.0028161 0.69903885 0.0028161 33.88973649 0.001347245 2.369251048 0.003129 0.72350194 0.003129 33.17350898 0.001541185 2.336773294 0.0034419 0.74478941 0.0034419 32.38173508 0.001737792 2.30476886 0.0037548 0.76347284 0.0037548 31.54367693 30.68161799 0.001936023 0.002135082 2.27323331 2.242162167 0.0040677 0.0043806 0.77999451 0.79470205 0.0040677 0.0043806

29.81223971 0.002334374 2.211550916 0.0046935 0.8078724 0.0046935 28.94780823 0.002533461 2.181395011 0.0050064 0.81972898 0.0050064 28.09715868 0.002732028 2.151689871 0.0053193 0.83045397 0.0053193 27.26649041 0.002929854 2.12243089 0.0056322 0.84019745 0.0056322 26.45999792 0.003126788 2.093613436 0.0059451 0.84908413 0.0059451 25.68036458 0.003322736 2.065232857 0.006258 0.85721852 0.006258 24.9291453 0.003517641 1.811529794 0.00929484 0.91044231 0.00929484 24.20706088 0.003711478 1.594228557 0.01233168 0.93874748 0.01233168 23.51422292 0.003904244 1.409074138 0.01536852 0.95577145 0.01536852 22.85030486 0.004095949 1.251989877 0.01840536 0.96680725 0.01840536 22.21467144 0.004286616 1.119164686 0.0214422 0.97433278 0.0214422 21.60647616 0.004476276 1.007104262 0.02447904 0.97965764 0.02447904 21.02473425 0.004664963 0.912655765 0.02751588 0.98353505 0.02751588 19.46615199 0.005211136 0.83301335 0.03055272 0.98642583 0.03055272 18.09649573 0.005750325 0.76571027 0.03358956 0.98862533 0.03358956 16.88924056 0.006283479 0.70860194 0.0366264 0.99032981 0.0366264 15.82079897 0.006811438 0.659843281 0.03966324 0.99167339 0.03966324 14.87092257 0.007334926 0.617862826 0.04270008 0.9927498 0.04270008 14.0225145 0.007854553 0.581335427 0.04573692 0.99362574 0.04573692 13.26124068 0.008370831 0.549154863 0.04877376 0.9943494 0.04877376 12.57510634 0.008884188 0.520407288 0.0518106 0.994956 0.0518106 11.95406409 0.009394984 0.494346111 0.05484744 0.99547154 0.05484744 11.38967485 0.009903518 0.470368707 0.05788428 0.99591542 0.05788428 10.8748243 0.010410047 0.447995166 0.06092112 0.9963022 0.06092112 10.40348957 0.010914784 0.426849151 0.06395796 0.99664288 0.06395796 9.970548886 0.011417913 0.406640876 0.0669948 0.99694586 0.0669948 9.571626813 0.01191959 0.387152119 0.07003164 0.99721757 0.07003164 9.202968392 0.01241995 0.368223154 0.07306848 0.99746298 0.07306848 8.861336697 0.012919108 0.349741479 0.07610532 0.99768595 0.07610532 8.543929179 0.013417164 0.331632153 0.07914216 0.99788954 0.07914216 8.248309139 0.013914206 0.313849623 0.082179 0.99807615 0.082179 7.972349361 0.01441031 0.296370844 0.08521584 0.99824773 0.08521584 7.714185579 0.014905542 0.279189562 0.08825268 0.99840586 0.08825268 7.472177877 0.015399962 0.262311613 0.09128952 0.99855185 0.09128952 7.244878552 0.015893621 0.245751087 0.09432636 0.99868678 0.09432636 7.03100523 0.016386565 0.229527257 0.0973632 0.99881158 0.0973632 6.829418289 0.016878835 0.21366215 0.10040004 0.99892706 0.10040004 6.639101829 0.017370468 0.19817866 0.10343688 0.99903393 0.10343688 6.459147548 0.017861496 0.183099114 0.10647372 0.99913281 0.10647372 6.28874105 0.018351948 0.168444224 0.10951056 0.99922427 0.10951056 6.127150156 0.018841851 0.154232347 0.1125474 0.99930883 0.1125474 5.973714902 0.019331229 0.140478996 0.11558424 0.99938695 0.11558424

5.827838946 5.688982154 0.019820104

0.020308493

0.127196557

0.11439417

0.11862108

0.12165792

0.99945909

0.99952564

0.11862108

0.12165792