Stress Analysis of a Tire Under Vertical Load by a Finite Element Method

1977 ◽  
Vol 5 (2) ◽  
pp. 102-118 ◽  
Author(s):  
H. Kaga ◽  
K. Okamoto ◽  
Y. Tozawa
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computer Program ◽  
Temperature Rise ◽  
Strain Energy ◽  
Internal Stresses ◽  
Vertical Load ◽  
The Finite Element Method ◽  
Internal Temperature ◽  
Element Method

Abstract An analysis by the finite element method and a related computer program is presented for an axisymmetric solid under asymmetric loads. Calculations are carried out on displacements and internal stresses and strains of a radial tire loaded on a road wheel of 600-mm diameter, a road wheel of 1707-mm diameter, and a flat plate. Agreement between calculated and experimental displacements and cord forces is quite satisfactory. The principal shear strain concentrates at the belt edge, and the strain energy increases with decreasing drum diameter. Tire temperature measurements show that the strain energy in the tire is closely related to the internal temperature rise.

Dynamic Stability of Off-Shore Structures

1980 ◽  
Vol 22 (1) ◽  
pp. 37-39
Author(s):  
J. Thomas ◽  
B. A. H. Abbas
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computer Program ◽  
Dynamic Stability ◽  
Dynamic Instability ◽  
Buckling Load ◽  
The Finite Element Method ◽  
Shore Platforms ◽  
Element Method

This paper presents the results of an investigation of the dynamic stability of steel off-shore platforms subjected to vertical and horizontal forces. A computer program based on the finite-element method was developed to calculate the frequencies of vibration, the buckling load, and the regions of dynamic instability.

scholarly journals Development and Optimization for a New Planar Spring Using Finite Element Method, Deep Feedforward Neural Networks, and Water Cycle Algorithm

2021 ◽  
Vol 2021 ◽  
pp. 1-25
Author(s):  
Ngoc Le Chau ◽  
Hieu Giang Le ◽  
Van Anh Dang ◽  
Thanh-Phong Dao
Keyword(s):  
Neural Network ◽  
Finite Element Method ◽  
Finite Element ◽  
Strain Energy ◽  
Water Cycle ◽  
Feedforward Neural Network ◽  
The Finite Element Method ◽  
Water Cycle Algorithm ◽  
Balance Mechanism ◽  
Element Method

The gravity balance mechanism plays a vital role in maintaining the equilibrium for robots and assistive devices. The purpose of this paper was to optimize the geometry of a planar spring, which is an essential element of the gravity balance mechanism. To implement the optimization process, a hybrid method is proposed by combining the finite element method, the deep feedforward neural network, and the water cycle algorithm. Firstly, datasets are collected using the finite element method with a full experiment design. Secondly, the output datasets are normalized to eliminate the effects of the difference of units. Thirdly, the deep feedforward neural network is then employed to build the approximate models for the strain energy, deformation, and stress of the planar spring. Finally, the water cycle algorithm is used to optimize the dimensions of the planar spring. The results found that the optimal geometries of the spring include the length of 45 mm, the thickness of 1.029 mm, the width of 9 mm, and the radius of 0.3 mm. Besides, the predicted results determined that the strain energy, the deformation, and the stress are 0.01123 mJ, 33.666 mm, and 79.050 MPa, respectively. The errors between the predicted result and the verifying results for the strain energy, the deformation, and the stress are about 1.87%, 1.69%, and 3.06%, respectively.

scholarly journals Numerical calculation of a statically indeterminate frame by the finite element method

2021 ◽  
Vol 2094 (3) ◽  
pp. 032030
Author(s):  
S A Sazonova ◽  
V F Asminin ◽  
A V Zvyagintseva ◽  
T V Kurchenkova ◽  
S S Rylev
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Calculation ◽  
Computer Program ◽  
The Finite Element Method ◽  
High Rigidity ◽  
Subsequent Processing ◽  
Source Data ◽  
Deformed State ◽  
Element Method

Abstract A numerical calculation of a statically indeterminate frame with high rigidity elements with the computer program STAB12. EXE using the finite element method is performed. An example of generating the source data for the program STAB12. EXE with subsequent processing of the results of the calculations is given. The features of checking the balance of nodes, rods and the frame as a whole based on the use of values taking into account the signs on the diagrams of torques, longitudinal and transverse forces are described. According to the results of calculations, the computer shows the frame in a deformed state.

The Stress of Sliding Vanes in a Rotary Compressor

2005 ◽  
Author(s):  
Yuan Mao Huang ◽  
Chien Liang Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computer Program ◽  
Rotary Compressor ◽  
The Finite Element Method ◽  
Governing Equations ◽  
Good Agreement ◽  
Cover Plates ◽  
Element Method

A rotary sliding vane compressor was redesigned with extended rods on both edges of each vane and guide slots on both cover plates to improve its performance. The governing equations were derived to obtain loads acting on vanes and the stress of vanes. The finite element method is used with a generated computer program to determine the stress of vanes based on the calculated loads and the measured loads acting on the vanes. The results were compared and show good agreement with those obtained by using an existing software IDEAS.

Evaluation of Gear Tooth Stresses by Finite Element Method

1995 ◽  
Vol 117 (2) ◽  
pp. 232-239 ◽  
Author(s):  
I. Huseyin Filiz ◽  
O. Eyercioglu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computer Program ◽  
Static Load ◽  
Gear Tooth ◽  
Spur Gear ◽  
The Finite Element Method ◽  
Contact Ratio ◽  
Pressure Angle ◽  
Element Method

Stresses developed in the root fillet of the spur gear tooth due to static load are evaluated by using the finite element method. The method is automated with a computer program with which the effects of module, contact ratio, fillet radius, pressure angle and teeth numbers of driving and driven gears are evaluated. The results are compared with previous studies. The formula which gives the closest results to this study is presented.

scholarly journals Optimal chest wall prosthesis: comparative study of mechanical and functional behaviour

2020 ◽  
Author(s):  
Paolo Nicola Camillo Girotti ◽  
Ingmar Königsrainer ◽  
Ugo Pastorino ◽  
Ambrogio Luigi Girotti ◽  
Francesco Rosa
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Chest Wall ◽  
Human Anatomy ◽  
Prosthetic Material ◽  
Vertical Load ◽  
The Finite Element Method ◽  
Prosthetic Reconstruction ◽  
Prosthetic Materials ◽  
Element Method

Abstract OBJECTIVES Chest wall resections are most commonly performed for tumours, infection, radiation necrosis and trauma. Defects in the anterior chest greater than 5 cm, posterior defects more than 10 cm or resection including more than 3 ribs, independently of the location, require skeletal prosthetic reconstruction. The aim of this paper was to evaluate the strength of prostheses that reproduced the normal human anatomy using different materials subjected to the most dangerous loading conditions. METHODS The biomechanical behaviours of different prosthetic materials under critical rib fracture conditions were analysed using the finite element method and then validated through mechanical testing of 3-dimensional polymethylmethacrylate ribs as a prosthesis reproducing the native anatomy of the human ribcage. RESULTS The prosthetic materials and the polymethylmethacrylate prosthesis were tested under 3 load conditions: sternal load (an anterior–posterior load applied at the third rib); lateral load (strength applied at the lateral arch of the fifth rib) and vertical load (vertical load applied at the first sternocostal junction) and showed the same results in terms of failures compared to the results from the finite element method model simulation (same location and number of fractures were detected). Although the displacement error between the finite element method and experimental test was up to 5% overall, no other microcracking was observed. CONCLUSIONS This experimental study demonstrated that all prosthetic materials currently available for human use show optimal mechanical behaviour in term of resistance and organ protection. Specifically, polymethylmethacrylate was a good candidate as a prosthetic material in term of lightness, resistance and prosthetic weight.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

Sign in / Sign up

Export Citation Format

Share Document