Model of Equal-Stressed Cylinder Based on the Mohr Failure Criterion

2014 ◽  
Vol 887-888 ◽  
pp. 869-872 ◽  
Author(s):  
Vladimir I. Andreev ◽  
Anton S. Chepurnenko ◽  
Batyr M. Jazyev

In this article, an analytical dependence of distribution of elasticity modulus across the thickness of the cylinder loaded with internal pressure p, at which the equivalent stresses according the Mohr failure criterion are the same at all points. The problem is solved for the cases of plane strain state and plane stress state in the elastic formulation.

2017 ◽  
Vol 754 ◽  
pp. 119-122
Author(s):  
Jelena M. Djoković ◽  
Snežana D. Vulović ◽  
Ružica R. Nikolić ◽  
Miroslav M. Živković ◽  
Branislav Hadzima

The bimaterial sample was analyzed to determine the three-dimensional zone at the interface crack tip and the field in the plane stress state. The solutions for the complete 3D field in different zones around the crack tip were approximated by the plane stress and plane strain states' asymptotic solutions. The difference between the solutions for the plane stress and plane strain states is defined by the three variables. The established relationship between the far field and the field around the crack tip in the plane strain conditions, enables relating the measured experimental results of the stress intensity factor to results for the stress intensity factor for the field around the crack tip, which represent the more relevant parameter for formulating the fracture criterion.


2018 ◽  
Vol 51 (6) ◽  
pp. 660-662
Author(s):  
V. M. Kruglov ◽  
A. G. Smolianin

2015 ◽  
Vol 111 ◽  
pp. 386-389 ◽  
Author(s):  
Nikolay I. Karpenko ◽  
Sergey N. Karpenko ◽  
Aleksey N. Petrov ◽  
Zakhar A. Voronin ◽  
Anna V. Evseeva

Author(s):  
Babak Haghpanah ◽  
Jim Papadopoulos ◽  
Davood Mousanezhad ◽  
Hamid Nayeb-Hashemi ◽  
Ashkan Vaziri

An approach to obtain analytical closed-form expressions for the macroscopic ‘buckling strength’ of various two-dimensional cellular structures is presented. The method is based on classical beam-column end-moment behaviour expressed in a matrix form. It is applied to sample honeycombs with square, triangular and hexagonal unit cells to determine their buckling strength under a general macroscopic in-plane stress state. The results were verified using finite-element Eigenvalue analysis.


Author(s):  
Alexander Zvorykin ◽  
Roman Popov ◽  
Mykola Bobyr ◽  
Igor Pioro

Analysis of engineering approach to the operational life forecasting for constructional elements with respect to the low-cycle fatigue is carried out. Applicability limits for a hypothesis on existence of generalized cyclic-deforming diagram in case of complex low-cycle loading (deforming) are shown. It is determined, that under condition of plane-stress state and piecewise-broken trajectories of cycle loading with stresses and deformation checking the cyclic deforming diagram is united in limits of deformations, which are not exceeded 10 values of deformation corresponding material yield point. Generalized kinematic equation of material damageability is described. The method of damageability parameter utilization for increasing of accuracy calculation of structural elements low-cycle fatigue by using the effective coefficients of stresses and deformations taking into account the damageability parameter is given.


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