scholarly journals Finite Element Prediction of Sheet Forming Defects Using Elastic-Plastic, Damage and Localization Models

2007 ◽  
Author(s):  
Badis Haddag ◽  
Farid Abed-Meraim ◽  
Tudor Balan
Keyword(s):  
Finite Element ◽  
Sheet Forming ◽  
Elastic Plastic ◽  
Plastic Damage ◽  
Forming Defects ◽  
Finite Element Prediction

Finite element prediction of contact pressures in cam-type femoroacetabular impingement with varied alpha angles

2016 ◽  
Vol 20 (3) ◽  
pp. 294-301 ◽  
Author(s):  
Qian Liu ◽  
Wanchun Wang ◽  
Andrew R. Thoreson ◽  
Chunfeng Zhao ◽  
Weihong Zhu ◽  
...  
Keyword(s):  
Finite Element ◽  
Femoroacetabular Impingement ◽  
Contact Pressures ◽  
Finite Element Prediction

scholarly journals Symmetric Nature of Stress Distribution in the Elastic-Plastic Range of Pinus L. Pine Wood Samples Determined Experimentally and Using the Finite Element Method (FEM)

Symmetry ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 39
Author(s):  
Łukasz Warguła ◽  
Dominik Wojtkowiak ◽  
Mateusz Kukla ◽  
Krzysztof Talaśka
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Stress Distribution ◽  
Moisture Content ◽  
Tool Geometry ◽  
Wood Fibers ◽  
Data Set ◽  
Plastic Deformations ◽  
Pine Wood ◽  
Elastic Plastic

This article presents the results of experimental research on the mechanical properties of pine wood (Pinus L. Sp. Pl. 1000. 1753). In the course of the research process, stress-strain curves were determined for cases of tensile, compression and shear of standardized shapes samples. The collected data set was used to determine several material constants such as: modulus of elasticity, shear modulus or yield point. The aim of the research was to determine the material properties necessary to develop the model used in the finite element analysis (FEM), which demonstrates the symmetrical nature of the stress distribution in the sample. This model will be used to analyze the process of grinding wood base materials in terms of the peak cutting force estimation and the tool geometry influence determination. The main purpose of the developed model will be to determine the maximum stress value necessary to estimate the destructive force for the tested wood sample. The tests were carried out for timber of around 8.74% and 19.9% moisture content (MC). Significant differences were found between the mechanical properties of wood depending on moisture content and the direction of the applied force depending on the arrangement of wood fibers. Unlike other studies in the literature, this one relates to all three stress states (tensile, compression and shear) in all significant directions (anatomical). To verify the usability of the determined mechanical parameters of wood, all three strength tests (tensile, compression and shear) were mapped in the FEM analysis. The accuracy of the model in determining the maximum destructive force of the material is equal to the average 8% (for tensile testing 14%, compression 2.5%, shear 6.5%), while the average coverage of the FEM characteristic with the results of the strength test in the field of elastic-plastic deformations with the adopted ±15% error overlap on average by about 77%. The analyses were performed in the ABAQUS/Standard 2020 program in the field of elastic-plastic deformations. Research with the use of numerical models after extension with a damage model will enable the design of energy-saving and durable grinding machines.

scholarly journals Finite element prediction of fatigue damage growth in cancellous bone

2015 ◽  
Vol 19 (5) ◽  
pp. 563-570 ◽  
Author(s):  
Ridha Hambli ◽  
Sana Frikha ◽  
Hechmi Toumi ◽  
João Manuel R. S. Tavares
Keyword(s):  
Finite Element ◽  
Fatigue Damage ◽  
Cancellous Bone ◽  
Damage Growth ◽  
Finite Element Prediction
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