1) stiffness degradation model
刚度退化模型
1.
The stiffness degradation model of SRC frame is determined based on the ex- perimental data of a SRC frame in this paper.
本文由型钢混凝土框架试验数据建立了型钢混凝土框架刚度退化模型,并结合钢筋混凝土剪力墙和钢筋混凝土框架的刚度与变形规律,利用基于刚度退化反应谱方法对混合结构进行三阶段抗震设计计算。
2) stiffness degradation
刚度退化
1.
Research on behaviors of frame-shear wall structures based on stiffness degradation;
基于刚度退化的框-剪结构受力性能研究
2.
In this paper,a new rate-dependent concrete elasto-plastic damage model for simulating the mechanical behaviors of concrete is established by introducing the effect of strain rate,damage variable and stiffness degradation variables.
通过引入应变速率、损伤变量以及刚度退化指标等参数,建立了应变率相关的混凝土弹塑性损伤模型。
3.
The real stiffness of frame in different deformation phases was determined according to experimental data,and the stiffness degradation coefficient was adopted to revise the stiffness of each floor.
根据模型试验数据确定各变形阶段框架的实际抗侧刚度,采用框架抗推刚度退化系数对框架各楼层抗推刚度进行修正,再引入周期、剪力与侧移修正系数对弹性阶段的结构受力性能予以修正,提出一种考虑刚度退化时框架结构的计算方法,并给出具体计算步骤。
3) rigidity degeneration
刚度退化
1.
The hysteretic behavior, rigidity degeneration, ductibility and capability of energy dissipation are analyzed by loading the structures in two principal directions.
通过三根不等肢配箍矩形框架柱在斜向低周水平反复荷载作用下的模型试验,结合以往试验数据,从滞回性能、刚度退化、延展性、耗能能力等方面对不等肢配箍矩形框架柱的抗震性能进行分析。
2.
Based on the experiments under low reversed cyclic loading,failure pattern,hysteresis curves,skeleton curves,restoring force model,displacement restoring capacity,ductility and rigidity degeneration of prestressed concrete beams with high PPR are studied systematically.
基于低周反复荷载试验,对高预应力度混凝土梁的受力过程、破坏形态、滞回曲线、骨架曲线、恢复力模型、变形恢复能力、延性、刚度退化等抗震性能进行了较深入的研究分析。
3.
Based on the experiment of columns under low-frequency cyclic loads, this paper discovers that rigidity degeneration is not obvious during the early loading stage but increases after the crack appears.
双向受剪框架柱在反复荷载作用下的刚度退化是结构抗震分析中的重要内容。
4) stiffness degeneration
刚度退化
1.
Based on the nonlinear theory,the accumulation effects of grade stiffness degeneration are considered in structural deterioration.
采用材料非线性理论,从刚度退化的角度考虑了结构损伤的累积效应,分析了既有钢筋混凝土刚架拱桥结构内力及变形,并依托实体工程进行了结构损伤诊断的数值模拟和非线性分析计算。
2.
In order to master the mechanical behaviors of vertical connection and correct design in prefabricated reinforced concrete (PRC) structures the strength degeneration and stiffness degeneration of the connection under repeated loading are analysed based on test results and theoretical analysis.
为了了解PRC结构竖缝的抗震性能,并进行合理的设计,以试验结果及理论分析为基础,对竖缝在反复荷载作用下强度和刚度的退化进行分析,认为接缝混凝土强度的退化率随接缝宽度的增大而减小;接合筋强度退化率仅与剪切摩擦系数有关;接缝强度的退化率随接缝宽度增大而减小,与接合筋的关系呈非线性;接缝刚度退化率随缝宽增大而减小,与接合筋关系不大。
5) stiffness degeneration method
刚度退化法
1.
With the quality defects in construction of grid structures with welded spherical joints,stiffness degeneration method is proposed to simulate the effects of construction quality on reliability of grid structure with welded spherical joints.
针对焊接球节点网架结构施工中存在的缺陷,提出用刚度退化法仿真施工质量对焊接球节点网架结构可靠性的影响。
6) stiffness model
刚度模型
1.
The stiffness model of a cracked shaft in this paper includes flexural stiffness, swing stiffness and cross stiffness due to the existence of a crack.
文中的裂纹轴刚度模型包含了弯曲刚度、摆动刚度以及裂纹引起的交叉刚度,不但是裂纹开口方向与轴心位移矢量夹角的函数,而且考虑了支承跨度、裂纹和转盘位置等因素的影响。
2.
From a yield line model used for calculating RHS-joint strength,a stiffness model is developed for a stepped T-type RHS joint ,and a stiffness formulas is established.
在计算节点强度的塑性铰线模型的基础上,建立了不等宽T型方管节点在支杆轴压荷载作用下的刚度模型,推出了刚度简化计算公式。
补充资料：AutoCad 教你绘制三爪卡盘模型,借用四视图来建模型
小弟写教程纯粹表达的是建模思路,供初学者参考.任何物体的建摸都需要思路,只有思路多,模型也就水到渠成.ok废话就不说了.建议使用1024X768分辨率
开始
先看下最终效果
第一步,如图所示将窗口分为四个视图
第二步,依次选择每个窗口,在分别输入各自己的视图
第三步,建立ucs重新建立世界坐标体系,捕捉三点来确定各自的ucs如图
第四步,初步大致建立基本模型.可以在主视图建立两个不同的圆,在用ext拉升,在用差集运算.如图:
第五步:关键一步,在此的我思路是.先画出卡爪的基本投影,在把他进行面域,在进行拉升高度分别是10,20,30曾t形状.如图:
第六步:画出螺栓的初步形状.如图
第七步:利用ext拉升圆,在拉升内六边形.注意拉升六边行时方向与拉升圆的方向是相反的.
之后在利用差集运算
第八步:将所得内螺栓模型分别复制到卡爪上,在利用三个视图调到与卡爪的中心对称.效果如图红色的是螺栓,最后是差集
第九步:阵列
第10步.模型就完成了
来一张利用矢量处理的图片
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条