ultimate stress造句

• Calculation methods for the ultimate stress and effective height of external prestressing tendons
  体外预应力筋极限应力和有效高度计算方法
• Relations between the fractal dimensions of tensile fractures and the tensile ultimate stresses for the grain composite material caco3 abs
  拉伸断口表面分形维数与其拉伸强度极限的关系
• Measures in force per unit area [ i . e . pounds per square inch ( psi ) ] the ultimate stress that can be withstood by a material in tension prior to failure
  在出现问题前材料单位面积所能承受的极限拉力，例如：磅每平方英寸( psi ) 。
• An important step in structure design is the calculation of the ultimate flexural strength of external prestressed concrete beams , which needs to calculate the ultimate stress increment of external tendons first
  结构设计的一个重要环节就是极限承载力计算,而计算体外预应力混凝土梁的极限承载力就必须求得梁在破坏时的体外筋应力增量。
• At last , the effect of the steel yield strenth , the yield - to - ultimate stress ratio , the shape and size of the access hole is researched . in conclusion , the finite - elenent model and the program adoped in this paper can well similate the response of beam - to - cloumn connections uder cyclic load
  本文所建立的模型及采用的程序能够很好的模拟、研究在循环荷载作用下刚性梁柱连接的反应，为进一步研究刚性钢框架梁柱连接的抗震性能打下了基础。
• This paper demonstrates ultimate stress increment of unbonded tendons can be composed of approximate elastic deformation along the elements and local plastic deformation by nonlinear analysis on the unbonded partially prestressed concrete continuous structures . referring to the rule of ultimate stress increment of unbonded tendons at every load case , a regression formula of ultimate stress increment of unbonded tendons based on elastic - perfectly plastic model has been presented for engineers to calculate ultimate stresses of unbonded tendons in prestressed concrete multi - span continuous structures
  考虑在各种荷载工况作用下无粘结筋极限应力增量的变化规律，并与理想的弹塑性模型相比较，最终得出以理想弹塑性模型计算各种荷载工况作用下无粘结筋极限应力增量的回归公式，从而为预应力混凝土多跨连续结构的无粘结筋应力设计计算提供有益的参考。
• This thesis briefly analyzes some yield criteria and instability criteria to the sheet metal forming first . then according to the transformation rule from ultimate strain to ultimate stress , it establishes the mathematical calculation models of the forming limit stress diagram for the software development according to hill48 、 hill79 and hosford yield criterion irrespectively
  本文首先分析了板料成形的屈服准则和失稳准则,然后根据极限应变到极限应力的转换关系,分别采用hill48屈服准则、 hill79屈服准则和hosford屈服准则,建立了用于软件开发的成形极限应力图的数学计算模型。
• The study in the paper starts with beam distortions , and it treats the plastic deformation area as pure bending sect , rest of the beam as rigid bodies . according to different shapes of the external tendons , it divides into three structural forms familiar in projects , that is the beams with no deviator , with a deviator and with two deviators , and studies the relation between the deformation of the external prestressing tendons and that of the beams , and derives the formulas of the ultimate stress increment of external tendons . in the formulas , the ultimate angle corresponding to half of the plastic deformation area is considered as a variable parameter
  本文首先从梁极限状态下的变形入手,将塑性铰区看作纯弯段,将塑性铰以外的区域看作刚体,按照体外预应力筋的形状不同,分工程中最常见的三种体外结构形式,即无转向块的直线型体外筋混凝土梁、具有一个转向块的单折线型梁和具有两个转向块的双折线型梁,研究体外预应力筋变形和梁体的变形间的关系,推导出以极限状态下塑性铰区之半对应的转角为参数的计算体外预应力混凝土简支梁以及连续梁的体外筋应力增量计算公式,并进一步求得梁的极限承载力。
• Ultimate stress increment is a hotspot problem in theory of unbonded partially prestressed concrete structure , however , according to design critera and the art of the state on this issue around the world , it is still not considered in reason that ultimate stress of unbonded tendons in prestressed concrete multi - span continuous structures varies with load cases
  无粘结筋的极限应力增量一直是无粘结预应力混凝土结构理论中热点问题，而从目前各国的设计依据及研究现状来看，还没有合理考虑多跨连续结构的无粘结筋极限应力随荷载工况变化的情况。