Detailed Impact Analyses for Development of the Next Generation Rail Tank Car: Part 2—Development of Advanced Tank Car Protection Concepts

2009 ◽  
Author(s):  
Steven W. Kirkpatrick
Keyword(s):  
Finite Element ◽  
Severe Accident ◽  
Finite Element Models ◽  
Alternative Strategies ◽  
Puncture Resistance ◽  
The Past ◽  
Significant Research ◽  
Current Design ◽  
Accident Conditions ◽  
High Level

Significant research has been conducted over the past few years to develop improved railroad tank cars that maintain tank integrity for more severe accident conditions than current equipment. The approach taken in performing this research is to define critical collision conditions, evaluate the behavior of current design equipment in these scenarios, and develop alternative strategies for increasing the puncture resistance. The evaluations are being performed with finite element models of the tank cars incorporating a high level of detail. Both laboratory scale and full-scale impact tests were performed to validate the modeling and ultimately compare the effectiveness of current and alternative equipment designs. This paper describes the use of the detailed finite element impact and puncture analyses to assess the performance of advanced puncture protection concepts.

Detailed Impact Analyses for Development of the Next Generation Rail Tank Car: Part 1—Model Development and Assessment of Existing Tank Car Designs

2009 ◽  
Author(s):  
Steven W. Kirkpatrick
Keyword(s):  
Finite Element ◽  
Model Development ◽  
Element Model ◽  
Full Scale ◽  
Severe Accident ◽  
Puncture Resistance ◽  
Impact Tests ◽  
Current Design ◽  
Accident Conditions ◽  
High Level

Significant research has been conducted over the past few years to develop improved railroad tank cars that maintain tank integrity for more severe accident conditions than current equipment. The approach taken in performing this research is to define critical collision conditions, evaluate the behavior of current design equipment in these scenarios, and develop alternative strategies for increasing the puncture resistance. The evaluations are being performed with finite element models of the tank cars incorporating a high level of detail. Both laboratory scale and full-scale impact tests were performed to validate the modeling and ultimately compare the effectiveness of current and alternative equipment designs. This paper describes the development of the detailed finite element model of the tank car and the use of the model for impact and puncture analyses. The validation of the model using the results of the full-scale impact tests is presented. The subsequent application of the model to assess the puncture resistance of existing tank car designs is discussed.

scholarly journals Applying models of spatial interpolation for the approximation of responses in the refinement of parameters of finite element models

2018 ◽  
Vol 212 ◽  
pp. 01021
Author(s):  
Anatoly Pikhalov ◽  
Anton Zabelin
Keyword(s):  
Finite Element ◽  
Radial Basis Functions ◽  
Element Model ◽  
Optimization Method ◽  
Latin Squares ◽  
Basis Functions ◽  
Finite Element Models ◽  
Radial Basis ◽  
High Level ◽  
Parameter Values

The numerical experiment on refining the parameters of the finite element model of the beam by the method of approximating the responses is presented in the article. As mathematical models of joint-stock companies are used: linear combinations of radial-basis functions, and Kriging-models. These models are generated in the work on the basis of Latin squares and depend on the parameters to be refined (the moduli of elasticity of finite element groups of the beam). To obtain optimal values of the parameters, a genetic optimization method was used. The results of solving the optimization problem showed a high level of coincidence of the parameter values with a combination of response models obtained from dynamic and static types of calculations. It was also shown that when solving the problems of finite element models, it is sufficient to use models constructed only on the basis of radial-basis functions.

Large Lateral Deformation Analysis of Angle Steel with Double Bolt Joints

2014 ◽  
Vol 556-562 ◽  
pp. 708-711
Author(s):  
Xing Zhou ◽  
Hai Bo Chen ◽  
Ying Qing Huang ◽  
Peng Wang ◽  
Wei Ling Xiao
Keyword(s):  
Finite Element ◽  
Deformation Analysis ◽  
Finite Element Models ◽  
Lateral Deformation ◽  
3D Finite Element ◽  
The Past ◽  
Different Types ◽  
Finite Element Package ◽  
Angle Steel ◽  
First Time

In the past time, it was neglected that different types of the deformation have an important effect on the Load-Displacement (L-D) relationship in bolt slippage. In this paper, 3D finite element models with double bolt joints are established by the ANSYS finite element package and a series of bolt slippage tests are conducted. The large lateral deformation in the process of bolt slippage is put forward for the first time. Numerical and experimental results show that large lateral deformation makes the stiffness of bolt joint smaller.

A Finite Element Analysis of the General Rolling Contact Problem for a Viscoelastic Rubber Cylinder

1988 ◽  
Vol 16 (1) ◽  
pp. 18-43 ◽  
Author(s):  
J. T. Oden ◽  
T. L. Lin ◽  
J. M. Bass
Keyword(s):  
Finite Element ◽  
Variational Principles ◽  
Standing Waves ◽  
Rolling Contact ◽  
Finite Element Models ◽  
Viscoelastic Cylinder ◽  
Element Analysis ◽  
Elastic Rubber ◽  
Frictional Effects ◽  
Rough Foundation

Abstract Mathematical models of finite deformation of a rolling viscoelastic cylinder in contact with a rough foundation are developed in preparation for a general model for rolling tires. Variational principles and finite element models are derived. Numerical results are obtained for a variety of cases, including that of a pure elastic rubber cylinder, a viscoelastic cylinder, the development of standing waves, and frictional effects.

Uneven Wear of Vehicle Tires

1993 ◽  
Vol 21 (4) ◽  
pp. 202-219 ◽  
Author(s):  
M. H. Walters
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Experimental Techniques ◽  
Lateral Stiffness ◽  
General Increase ◽  
Element Analysis ◽  
The Past ◽  
Uneven Wear

Abstract Advances in tire construction have led to major increases in tire life over the past twenty years, mainly by increasing the lateral stiffness and thus reducing slip during cornering. However, this general increase in tire life has tended to highlight the problem of uneven wear. In the present paper, three new experimental techniques are described which have been developed to study treadwear distributions. These techniques are evaluated and their results compared with a finite element analysis. Taken together, they indicate some of the causes of uneven wear and may be used to identify tire design and service features which contribute to uneven wear.

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