Showing 4 results for Strain Analysis
Volume 7, Issue 1 (11-2008)
Abstract
In this paper, we report results of stress analysis and fatigue life assessment of a number of spot weld joints. Models are presented for corrugated plates, jointed to an L-shape plate using 7 and 14 spot welds, which are subject to four different types of alternating loading conditions. The analyses are based on the solutions obtained from the ANSYS7 finite element package, using solid elements. In this study, strains and stresses in the weld nugget are evaluated. However, the primary focus is on strain-based fatigue life assessment which considers the 3D state of stress around the weld nugget and the nonlinear effects of the materical and the geometry.
Ehsan Naraghian, Majid Mirzaei,
Volume 8, Issue 1 (10-2008)
Abstract
In this paper, we report results of stress analysis and fatigue life assessment of a number of spot weld joints. Models are presented for corrugated plates, jointed to an L-shape plate using 7 and 14 spot welds, which are subject to four different types of alternating loading conditions. The analyses are based on the solutions obtained from the ANSYS7 finite element package, using solid elements. In this study, strains and stresses in the weld nugget are evaluated. However, the primary focus is on strain-based fatigue life assessment which considers the 3D state of stress around the weld nugget and the nonlinear effects of the materical and the geometry.
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Volume 12, Issue 2 (6-2012)
Abstract
In the present study the phenomenon of drying a clay brick ceramic is analyzed. Strain–Stress equations coupled to heat and mass transfers during drying of deformable two-phase media has been modeled and both 2D and 3D arrangements have been studied. In order to compare the results, two samples with identical compositions are used for both configurations. The material is considered as a two-phase, homogeneous, isotropic, and highly shrinkable medium. The principal equations of the model, because of the shrinkage behavior are written in a Lagrangian formulation. The model is solved numerically by a finite difference method and Validation of results is achieved by comparing the numerical results with experimental data. The model being developed allows the derivation of the time and space moisture contents, strains, and stresses incurred as a result of drying. A significant difference was observed between the results obtained for the two different configurations particularly in intensity of the stress causing cracking
Mohsen Heydari, Khalili Khalili,
Volume 15, Issue 10 (1-2016)
Abstract
Drying of porous materials is a critical step in the production of many products such as ceramics, brick and tile. Quality of dried product is severity influenced by drying processes. The aim of the present work is modeling of convection drying of a ceramic by using diffusion model. Material properties changes such as Young's modulus and shrinkage factor to moisture content are considered in simulation. Both two and three dimensional configurations have been investigated. The model is solved numerically by a finite element method. A significant difference was observed between the results obtained for the two different configurations particularly in the intensity of the drying-induced stresses. Validation of results is achieved by comparing the numerical and experimental results. The effect of Young's modulus variation has been investigated. It was observed that drying-induced stresses are highly affected by Young's modulus variations. According to the results, none of the simulation methods, cannot be regarded as a safer method in crack prediction. The changes in Young's modulus, Has no effect on the location of maximum stress However, delays in the timing of it.
