排序方式: 共有10条查询结果,搜索用时 15 毫秒
1
1.
2.
以大型水利水电工程中广泛运用的全级配混凝土为对象,研究了骨料的几何随机性和砂浆、界面(骨料/砂浆界面)的力学随机性对全级配混凝土抗拉性能的综合影响.基于非线性损伤理论以及有限单元法,采用FORTRAN自编程序,通过50组随机试件的单轴拉伸数值试验,研究了骨料、砂浆及界面的随机特性对弹性模量、峰值应变以及极限抗拉强度的影响,对比了各自的影响程度,探讨了数值分析中同时考虑骨料、砂浆及界面随机性的必要性. 相似文献
3.
Based upon the theory of ardsotropic plates, the unsymmetrical large deformation equations of orthotropic circular plates were derived. By using Fourier series, the partial differential equations of this problem can be transformed into sets of nonlinear differential equations . And the procedure to solve the problem using the iterative method is given . 相似文献
4.
还记得上一期《非常留言板》栏目中那则非常消息吗?海洋馆鲨鱼不断发福,工作人员无计可施,向《小哥白尼》发来紧急求助。接到求救信的编辑部全体总动员,在翻阅了海量的资料后,小编很幸运地找到了一位名叫老幺的老水手。在海上和鲨鱼打了40多年交道的老幺对鲨鱼的脾性可是摸得一清二楚。他不但有着丰富的防鲨经验,还总结了一套驱鲨方法。 相似文献
5.
EDITORIALCOMMITTEEOF"APPLIEDMATBEMATICSANDMECHANICS"Editor-in-chief:ChienWeizang(钱伟长)ViceEditor-in-chief:'TanHaosheng(谈镐生),Ye... 相似文献
6.
中外合作办学类高校大学生心理健康调查研究 总被引:2,自引:0,他引:2
为了解中外合作办学类高校大学生心理健康状况,采用症状自评量表(SCL-90)对此类大学生和普通外语类高校大学生进行测查,并与全国常模水平比较。结果表明:中外合作办学类高校大学生的各项因子得分均显著高于全国常模分;与普通外语类高校大学生相比,在躯体化、敌对、恐怖、偏执和其他的因子上的得分都高于后者。 相似文献
7.
By using the method of quasi-shells,the nonlinear dynamic equations of three-dimensional single-layer shallow cylindrical reticulated shells with equilateral tri- angle cell are founded.By using the method of the separating variable function,the transverse displacement of the shallow cylindrical reticulated shells is given under the conditions of two edges simple support.The tensile force is solved out from the compati- ble equations,a nonlinear dynamic differential equation containing second and third order is derived by using the method of Galerkin.The stability near the equilibrium point is discussed by solving the Floquet exponent and the critical condition is obtained by using Melnikov function.The existence of the chaotic motion of the single-layer shallow cylin- drical reticulated shell is approved by using the digital simulation method and Poincarémapping. 相似文献
8.
9.
10.
充分考虑钢筋混凝土梁的变刚度特性,利用阶梯折算法,给出超静定梁的强度,刚度与内力的一致性设计. 相似文献
1