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. In addition, a parametric study was carried out, including the effects of strain-hardening exponent, strain rate sensitive coefficient, thermal-softening exponent, static shear strength, strain-hardening.... It is found that at higher strain rates the damage in the ASB becomes more serious at the same average plastic shear strain of the ASB. Key words: adiabatic shear band; damage variable; titanium alloy......
J. Cent. South Univ. Technol. (2008) 15(s1): 496-499 DOI: 10.1007/s11771-008-408-x Experimental study on time-dependent stress and strain of in-plane shear (ModeⅡ) fracture process of rock WANG Zhi(王 志), RAO Qiu-hua(饶秋华), XIE Hai-feng(谢海峰) (School of Civil and Architectural Engineering, Central South University, Changsha 410075, China) Abstract: Shear-box test with strain measurement......
it is not reasonable enough to assume that the strain in cross-section centroid is zero without considering uniform axial deformation. Key words: shear lag effect; thin-walled box girder; energy-variational method...) is the average shear strain; αs is the shear coefficient; Aw is the cross-sectional area of the two web plates; G is the shear modulus; Q(x) is the shear force; W(x) is the vertical deflection of the box......
, and the upper box was pushed horizontally at a rate of 1 mm/min until the sample failed, or got to a general strain of 5%. Three specimens were tested at varying confining stresses to determine the shear... direct shear tests 3.2 Comparison of results with triaxial compression tests Fig.5 shows the behavior of principle stress difference versus vertical strain of consolidated- undrained triaxial......
region, strain softening region and residual state region. The analytical solutions of stress, strain, displacement and radius of each region are obtained. The effects of the strain softening and shear... increase with the increase of the damage factors and shear dilation factors. The solutions can be applied to the stability analysis and support design of the underground excavation.Key words:strain......
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effect of both normal and shear strain specific energies, the concept of the total equivalent strain specific energy (TESSE) at an oblique section and a new strength theory named as limiting strain energy...; (3) Maximum distortion energy theory (von Mises)[4] states that failure occurs when the maximum shear strain energy component in the complex stress......
interpretation of shear bands in sand as a bifurcation problem in continuum mechanics, shear bands in sand are considered as high-strain phase (plastic phase) of sand and the materials outside... results are consistent with experimental measurements. Key words: strain localization; locally-deformed bands; shear bands; two-phase equilibrium; granular model of sand 1 Introduction Strain......
; yield; complete plastic model assumption; shear stress calculation; limiting strain energy strength theory 1 Introduction For plastic metals in uniaxial tension or compression, the phenomenon... strain elastic-plastic torsion of solid bars [J]. International Journal of Plasticity, 1992, 8: 773-801. [9] HUANG S, KHAN AS, YAN H. Shear measurement using strain gages under large deformation......
microstructural effect beyond the occurrence of shear strain localization, the distributions of local plastic shear strain and deformation in adiabatic shear band(ASB) were analyzed. The peak local plastic shear strain is proportional to the average plastic shear strain, while it is inversely proportional to the critical plastic shear strain corresponding to the peak flow shear stress. The relative......