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Showing 1 to 20 of 30 for “"von-Mises Stress"”.
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A Finite Element Study of Stresses in Stepped Splined Shafts, and Partially Splined Shafts Under Bending, Torsion, and Combined Loadings
The maximum von Mises stress is calculated for solid finite element models of splined shafts with straight-sided teeth. One spline shaft is stepped with larger diameter section containing spline teeth and the smaller diameter section circular and cylindrical with no spline teeth. A second shaft is …
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Investigation of Small Remotely Piloted Aircraft System (sRPAS) to Human Head Impact
… with head injury-related responses such as skull von Mises stress, brain strain, and strain-based cumulative strain damage measure (CSDM). HIC showed moderate to strong correlations with skull stress. BrIC correlated with brain strains but at weaker correlations compared to the correlations in …
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Influence of Hexagonal Height on the Stress Distribution
… shape. However there have been no studies on the stress distribution of the lower supporting structure in terms of the height of the hexagon. Therefore, the purpose of this study was to evaluate the mechanical stability and the factors that have an affect by calculating through stress analysis …
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Development of Surrogate Model for FEM Error Prediction using Deep Learning
… given mesh. For this research, we have taken the von Mises stress contours and have predicted two different types of error indicators contours, namely (i) von Mises error indicator (MISESERI), and (ii) energy density error indicator (ENDENERI). Error indicators are designed to identify the …
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The relationship between masticatory stress and prognathism : a finite element and morphometric study
… the ability to accommodate masticatory stress may vary, and this will have profound effects on final craniofacial form. The purpose of this research is a two-fold examination of mid-facial prognathism in modern African males. First, an osteometric and morphological examination of …
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Multidisciplinary design of thermally radiating structures using a level set based topology optimization approach
… via the augmented Lagrangian method. Both von Mises stress and first mode frequency constraints are implemented since they are commonly found in aerospace design problems where severe structural loads can lead to catastrophic failure. The final contribution is testing several data mining …
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Modelling and analysis of a non-pneumatic tire-road interaction using finite element method
… vertical load, and slip angle. Additionally, Von Mises stress distribution was analysed to identify critical spoke regions prone to failure. The results established the safe loading conditions for the non-pneumatic tire and identified the slip angle at which cornering force saturation occurs, …
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Quasiturbine rotor development optimization
… existing one when compared the distribution of von Mises stress and the percentage of deformation for both cases . According to the results of the three mateials that tested by simulation for the proposed design , ductile iron is the most suitable materials from the three tested materials for …
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Structural design of waste-thermoplastic wind turbine blade
… are utilized in obtaining mass, deflection and von mises stress in the spar flange for the 70m/s Extreme Wind speed Model case and 19.61m/s Extreme Operating Gust load case. From the results, it is clear, for similar parameters that waste-thermoplastic blade results in 2 times the blade …
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Consequences of Simultaneous Local and Overall Buckling in Stiffened Panels
… ¨C those for which local and overall buckling stresses are the same. The new expression for (EIx/Db)CO is also validated using the 55 FE models. Earlier work by (Chen, 2003) had produced a new step-by-step beam-column method for predicting stiffener-induced compressive collapse of stiffened …
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Integrated structural analysis and design using 3-D finite elements
… The plates were optimized so as to minimize the stress concentration near the hole measured by the ratio of the Von Mises stress to the applied boundary stress. The analysis program was validated by comparison to a commercial finite-element program as well as photoelastically obtained stress …
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Design of functionally graded compliant mechanisms using topology optimization
… respect to mechanical/geometric advantage and stress distributions. A novel modified solid isotropic material with penalization (SIMP) method is adopted for representing local element material properties in FGM structures. The method of moving asymptotes (MMA) is used in conjunction with …
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A Nonlinear Finite Element Model of the Human Eye to Investigate Ocular Injuries From Night Vision Goggles
… goggles. This was evaluated as the greatest Von Mises stress in the eye when the airbag is deployed. The worst-case position was achieved by minimizing the distance between the eyes and goggles, having the occupant look directly into the airbag, and making initial contact with the airbag …
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Study of mouthguard design for endurance and air-flow enhancement
… the performance of the mouthguards, in term of stress distribution and air flow path by improving the pressure difference between the ambient (outside) and the oral cavity pressure (inside). A preliminary design has been study to simulate its total deformation and stress, in terms of Von Mises …
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Evaluation of the Protective Capacity of Ice Hockey Goaltender Masks for Three Accident Events using Dynamic Response and Brain Stress and Strain
… to calculate maximum principal strain (MPS) and von Mises stress in the cerebrum. The results demonstrated the importance of assessing the protective capacity of ice hockey goaltenders masks for each accident, as each event created a unique response. A comparison of unhelmeted and helmeted …
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Design and reliability-based optimization of the piezoelectric flex transducer
… different safety factors, is driven by the von mises stress of the device and is then searched by a mathematical algorithm with the assistance of surrogate models. To improve the efficiency of the surrogate modeling, a multi-level surrogate modeling approach for fast convergence will be …
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NITE–Processed SiC/SiC Ceramic Composites in Liquid Sandwich Vacuum Vessel
… modified Carnot efficiency and reduces the maximum Von Mises stress in the VV by an order of magnitude, while keeping a safety factor of 1.268, as compared to a conventional solid-walled VV made from EUROFER97.
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Neural implicit representations for engineering design
… mapping the latent space to metrics like maximum von Mises stress is also analyzed using a dataset of 25 designs. Finally, the required characteristics of the design parameterization are revisited to demonstrate that the proposed method satisfies the ideal characteristics of design …
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Numerical analysis and material selection of functionally graded pipes based on metals and ceramics for deep offshore oil and gas operations in Gulf of Guinea
… parameters used for the validation were axial stress, circumferential stress and von-mises stress. The comparison of results obtained from Ghannad's Paper showed excellent agreement with deviations of most of the variables used for the within 5% with both the numerical and analytical results …
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An Aero-Thermo-Chemo-Mechanical Coupling Framework for the Analysis of Hypersonic Ablative Thermal Protection Systems
… the decomposition region as a zone in which high von Mises stress tends to occur—care must be taken to ensure that internal and external flight loads do not exceed allowable limits to prevent catastrophic TPS material failure in this region. However, perhaps the most significant insight resulting …
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