为了克服峰值塑性应变的网格敏感性,对现有强化函数进行修正。
A modification to the existing hardening function is proposed to reduce the mesh sensitivity of the plastic strain at peak stress.
分析了钢纤维高强混凝土和普通高强混凝土的缺口敏感性以及钢纤维对高强混凝土裂缝前缘应变场分布的影响。
The notch sensitivity of HSC and steel fiber reinforced HSC and the strain field of HSC reinforced with steel fibers ahead of the crack tip have been analyzed.
对试验钢筋的应变时效敏感性、韧脆转变温度、可焊性、强度与韧性的配合进行了系统的测试和研究。
The sensibility of strain aging, ductile-brittle transit temperature, weldability, and the coordination between strength and ductility of reinforced steel bars were systematically investigated.
复合材料在半固态区间压缩时具有应变速率敏感性。
So the composite has sensitivity of strain rate during compression in semi-solid interval.
结果显示:AZ 31镁合金铸轧组织对应变速率和变形量均具有较强的敏感性。
The results show that the microstructure of continuously roll-cast AZ31 alloy is sensitive to both strain and strain rate.
还讨论了材料各向异性、应变率敏感性、不均匀性及其幅度、惯性等因素对塑性失稳的影响。
The effects of anisotropy, strain rate sensitivity, imperfection and its amplitude and inertia on plastic instability are discussed.
结果表明:皮肤的刚度随热损伤度的提高而下降,并且具有不同损伤度下的应变速率敏感性,这些特性主要是由皮肤的水合作用变化所引起的。
The results demonstrate that skin stiffness decreases with increasing thermal damage degree and there exist strain rate sensitivity at different damage levels, caused mainly by hydration changes.
这就从试验上判明,即使在相同的应力状态下,应变速率敏感性指数也与变形路径密切相关。
These prove that the strain-rate sensitivity index depends tightly on the deformation route from experiment, even on the condition that those stress-state are similar.
本文也指出了由于应变率敏感性所引起的内耗增量和过应力的类比性。
The analogy between internal friction increment and overstress due to strain-rate sensitivity is clarified.
对混凝土应变速率敏感性的研究现状及其工程应用进行了简要的评述。
The state of the art of research on the strain rate sensitive behavior of concrete and its application in engineering are briefly reviewed.
金属钼是正应变速率敏感性材料,即流变应力随着变形速率的增加而增大。
Molybdenum is strain rate sensitive material, that is, flow stress increases with increasing strain rate.
应变率检测缺血节段的敏感性和特异性分别为90.0%和91.7%。
The sensitivity and specificity of SRI with DSE for detecting ischemic myocardium were (90.0) % and (91.7) %, respectively.
材料的应变速率敏感性指数与孔洞长大速率通过不同的变形机理图控制着这种过程。
It is controlled by the sensitive index of the strain rate and the cavity growth rate of material.
基于以上的观点,本文采用慢应变速率实验方法探讨了预形变对X70管线钢在模拟土壤介质中应力腐蚀敏感性的影响。
On the base of above appoints, the slow strain rate test was used to study the effect of prestraining on the SCC susceptibility of X70 pipeline steel in simulate soil media.
结果表明纤维在排水性沥青混合料中起到了减少析漏,提高抗弯拉应变,降低疲劳应力敏感性等作用。
The result showed that the role of fiber in the PFC mixture was to prevent the drainage, improve the flexural strain and reduce the sensitivity of the fatigue.
该模型包括了应变率敏感性效应,应变软化效应和应变硬化效应。
The model includes the effect of strain rate sensitivity, strain softening and strain hardening.
泡孔尺寸不仅影响着材料的屈服强度和塑性模量等,还影响着材料的应变率敏感性。
Cell-size has a significant effect not only on the crushing stress and plastic modulus of aluminum foam, but also on the strain-rate sensitivity of material of this kind.
但是较慢的溶解速率以及相对高的应变速率使得裂纹没有足够时间发生有效扩展,应力腐蚀敏感性仍然较低。
Nevertheless, there are not enough time for the effective growth of the cracks because of slow dissolution rate and relative high strain rate. Therefore, the SCC susceptibilities are also low.
测试了五种纤维束的准静态和动态应力应变关系,并比较了它们对应变率的敏感性。
The dynamic tensile properties of five types of high strength fiber bundles were measured and the sensitivity of strain rates was investigated.
研制了一种低焊接裂纹敏感性高能量输入焊接用低合金高强钢,并研究了其冷应变时效行为。
A new large heat input welding high strength low alloy steel with low susceptivity to weld cold cracking was developed and the cold strain aging behavior was investigated.
通过不同的精化网格,分析有限应变条件下单元尺寸对非局部的敏感性。
Mesh-sensitivity analyses of nonlocalization at large strain along with the refinement of corresponding element size are also discussed.
分析比较了合金流变应力对温度及应变率的敏感性。
The sensitivities of the plastic flow stress to strain rate and temperature are analyzed.
峰值应变随应变率增大有增长的趋势,极限应变没有明显的率敏感性;
The peak strain has a increasing tendency with the increase in strain rate; and the ultimate strain is not sensitive to the strain rate.
为了反映冲击载荷下岩石材料的应变率敏感性,对损伤的门槛值进行粘性调整。
The damage threshold is regularized in order to reflect strain-rate sensitivity of rock materials under impact load.
在该温区内,应变速率敏感性出现了负值, 强度出现了一个平台;
The critical plastic strain for the onset of serrations has a negative or positive temperature coefficient within the temperature region lower or higher than Tt.
微合金元素钒的加入有利于钢筋强度与塑性综合提高,降低钢筋应变时效敏感性,提高钢筋高应变低周疲劳性能。
The accession of vanadium has shown a great effect on improvement of coordination between strength and ductility, sensitivity to strain aging and high strain and low cycle fatigue property.
应变速率的提高对动态再结晶的抑制是造成AZ31镁合金温变形中应变速率敏感性的原因。
The appreciable suppression of DRX due to the increase of strain rate is found to be the reason for the strain rate sensitivity in warm deformation of hot-rolled AZ31 Mg alloy.
随着冲击速度的提高,材料具有应变率正敏感性,但到一定程度材料反而显示出应变率负敏感性。
With the increment of impact velocity, the new material appears positive strain rate sensitivity, but when the increment reaches a certain degree, the material shows negative strain rate sensitivity.
随着冲击速度的提高,材料具有应变率正敏感性,但到一定程度材料反而显示出应变率负敏感性。
With the increment of impact velocity, the new material appears positive strain rate sensitivity, but when the increment reaches a certain degree, the material shows negative strain rate sensitivity.
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