Using Finite Element Analysis Throughout The Product Development Cycle for Plastic Interior Trim Components

1995 ◽  
Author(s):  
Colin C. Frost
Author(s):  
M. Khandaker ◽  
S. Ekwaro-Osire

Finite Element Analysis (FEA) and experimental techniques based laboratory courses are used in the mechanical engineering curriculum to equip students with numerical and experimental abilities to solve design problems. Review of mechanical engineering curricula in US universities found no definite structure for the numerical and experimental based laboratory courses to support the core courses. Also, the authors found that due to lack of knowledge about the application of finite element analysis and lack of collaboration of experimental laboratories in the universities and colleges, students are unable to apply theory, numerical tool and experiment, when it comes to complete product design. To be effective product development engineers, students have to know how to use these engineering tools effectively for various mechanical systems to design a product with perfection. This motivated the authors to develop, teach, and evaluate a laboratory course before the senior design project, where students will have hands on experience with product design. The application of theoretical, numerical and experimental techniques, and their interconnectedness, will also be addressed in this new course. The main three learning objectives of this course were: (1) the ability to apply physical and mathematical models to analyze or design the mechanical systems; (2) the ability to use numerical tools (e.g., FEA) and a fundamental understanding of the limitations of such tools; and (3) the ability to correlate the theoretical knowledge with FEA and experimental findings. Some of the issues observed from the previously taught FEA laboratory related course are: (1) students do not understand how to use FEA tools in practical design problems; (2) students are unable to relate the theory with numerical and experimental result; (3) students do not understand the importance of verification of numerical results; and (4) students with knowledge of a particular analysis background have problems setting up the product design requirements dealing with different analysis systems. To overcome these difficulties, the proposed course will select design problems related to heat, fluid, vibration, and fracture and examine the overall design process including preliminary design, material selection, manufacturing, analysis, and testing. Simulating the complexity of “real world” engineering will prepare students for their senior design projects. The main benefits of this course are: (1) application of theoretical, numerical, and experimental techniques to solve a design problem, and (2) hands on experience with design problems.


Author(s):  
P.R. Roy ◽  
V. Hariram ◽  
M. Subramanian

Emissions such as Nox and CO resulting from the combustion of the diesel engines in the commercial vehicles leads to environmental degradation and ozone layer depletion. Alarming environment trend forces the government institutions to develop and enforce strict emission laws for the next generation transportation vehicles. Stricter emission laws mean higher operating pressure, temperature, reduced weight, tight packaging space, engine downsizing etc. Engine cooling systems are the critical components in the managing the engine cooling requirement of the commercial vehicle. Generally engine cooling system includes radiator, charge air cooler, engine oil cooler etc. Product development of thermal management system using the traditional design process takes more time, resource and money. To solve the complex design problem, numerical technique such as finite element analysis is performed upfront in the product development of the radiator to evaluate the structure behaviour under mechanical loading. In this paper, internal static pressure analysis of a radiator is presented to showcase the benefits of using the finite element technique earlier in the product design phase. Pressure cycle life at a critical joint of the radiator is calculated using strain-life approach. Finite element analysis aids in visualization of the hot spots in the design, comparing different design options with less turnaround time. Experimental testing and prototypes can be reduced. Risk of a product being failed is greatly minimized by performing the numerical simulation.


2012 ◽  
Vol 490-495 ◽  
pp. 2888-2892
Author(s):  
Yan Wu ◽  
Yan Ma

Using the powerful parametric features of Pro/E modeling for the assembly of the track board, and building up Three-dimensional solid modeling. Finite element analysis with the simulation of mechanical motion to simulate the track through the soft ground of the forest were carried out. It can significantly reduce the design costs and speed up the development cycle to adapt of the requirements of the modern forestry industry.


2012 ◽  
Vol 192 ◽  
pp. 144-148 ◽  
Author(s):  
Zhan Guo Wei ◽  
Min Ya Deng ◽  
Jin Hao Liu

Forestry Felling &Cultivation Machine is a multi-functional, highly automatic and greatly efficient wood-cutting facility, whose unique advantage can be shown in the field of wood-cutting in the mountainous region. Mechanical arm is a prominent component of Forestry Felling &Cultivation Machine so that its design will have a direct impact on the function and the efficiency of Forestry Felling &Cultivation Machine. The paper aims at realization of hypothesized design of Forestry Felling &Cultivation Machine under the control of computer platform through hypothesized design of computer and simulation technology. Besides, it focuses on the structural analysis of mechanical arms through finite element theory and software of finite element analysis. What’s more, optimized design of structure will be reached according to the result of analysis so that the reliability of the structure can be proved and both development cycle of product and its research and development expense will be reduced.


1995 ◽  
Vol 23 (3) ◽  
pp. 175-188 ◽  
Author(s):  
R. Gall ◽  
F. Tabaddor ◽  
D. Robbins ◽  
P. Majors ◽  
W. Sheperd ◽  
...  

Abstract Over the past ten years the Finite Element Analysis (FEA) has been increasingly integrated into the tire design process. The FEA has been used to study the general tire behavior, to perform parameter studies, and to do comparative analyses. To decrease the tire development cycle, the FEA is now being used as a replacement for certain tire tests. This requires the accuracy of the FEA results to be within those test limits. This paper investigates some of the known modeling techniques and their impact on accuracy. Some of the issues are the use of shell elements, assumptions for boundary conditions, and global/local analysis approaches. Finally, the use of new generation supercomputers, massively parallel processing systems (MPP), is discussed.


2012 ◽  
Vol 157-158 ◽  
pp. 1661-1664
Author(s):  
Hai Peng Pan ◽  
Hao Feng

Open-front press is one of the dominating equipment for punch forming. Body frame is the primary loadbearing part of this machine, and its rigidity and intensity have great influence on the working performance. In order to optimize the structure of body frame and shorten the product development cycle, finite element analysis, which is an effective technique in CAE, is used to investigate the body frame’s deformation and stress distribution in the presented work. By taking JC21-160, a representative type of open-front press, as the analysis object, the whole procedures of this work, such as modeling, meshing, loading, constraint handling and the solving, have been discussed explicitly. The analytical method and result will conduce to improve the structure design of this kind of machine and the similar devices.


2018 ◽  
Vol 777 ◽  
pp. 491-498
Author(s):  
Weerapol Namboonruang

These are developed to the Eco-composite structure for using of the rural building materials. The chemical and physical properties were carried associated with Ratchaburi lateritic red soil and cellulose fibers for product development. Also mechanical testing, thermal conductivity, leachability, environmental toxic and Finite element analysis (FEA) were conducted for product evaluation.


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