Download or read book Finite Element Model Development of Ford F250 Pick Up Truck Using Laser Scanning Method and Its Validation and Application written by Jagadish Mahadevaiah and published by . This book was released on 2008 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Validation and Application of the WRECKER Nonlinear Finite Element Program in Analyzing Vehicle Side Structures Technical report written by Preston G. Smith and published by . This book was released on 1978 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Concept Modeling Methodologies Supporting the Design of a Pickup Box written by Gary M. Osborne and published by . This book was released on 2003 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes methods for creating a concept finite element model in an early automotive design phase, when structural decisions occur. Detailed finite element models use shell element types for modeling sheet metal components regardless of the component's structural function. Concept finite element models divide the architecture into two categories of beam components and shell components established by the component's structural function. Additionally, concept models require special major body joint construction utilizing coincident nodes, rigid element connections, or elastic joint representations because of the concept model's beam component junctions. Concept modeling techniques facilitate simplifying model size, development time, and solution time for automotive body-in-white structures. A reverse engineering process is utilized to generate a baseline detailed finite element model of a physical pickup box, which is analyzed to determine benchmark noise, vibration, and harshness (NVH) parameters. Then, three concept modeling joint representation strategies are investigated via finite element analysis direct comparison with the benchmark NVH parameters. Next, the most accurate concept modeling procedure is selected for utilization as an early design phase concept modeling methodology. Finally, multiple design concept models are constructed to trim pickup box weight for a light-duty truck. The redesign efforts are primarily focused on the bulky transverse cross members and inefficient load bearing floor geometry arrangement.
Download or read book Validation and Application of the WRECKER Nonlinear Finite Element Program in Analyzing Vehicle Side Structures Vol I Summary Report Final Report written by Preston G. Smith and published by . This book was released on 1978 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Validation and Application of the WRECKER Nonlinear Finite Element Program in Analyzing Vehicle Side Structures Vol II Technical Report Final Report written by Preston G. Smith and published by . This book was released on 1978 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Validation and Application of the WRECKER Nonlinear Finite Element Program in Analyzing Vehicle Side Structures Technical report written by Preston G. Smith and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methodology of Developing a Finite Element Model with Varying Applications written by Hansjoerg Schinke and published by . This book was released on 1995 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Application to Vehicle Design written by and published by . This book was released on 1974 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is divided into 7 sections: recent advances in finite element methods; static analysis; fatigue analysis; dynamic analysis and crash; nonlinear analysis; modeling techniques; and computer aided pre- and post-processing. Partial contents include: finite element analysis of automobile structures; static analysis via substructuring of an experimental vehicle front-end body structure; the use of condensation techniques for solving dynamics problems; using interactive graphics for the preparation and management of finite element data and much more.
Download or read book Validation and Application of the WRECKER Nonlinear Finite Element Program in Analyzing Vehicle Side Structures written by Preston G. Smith and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Models of Motor Vehicles Task B written by Stephen A. Ridella and published by . This book was released on 1995 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of the Finite Element Method to Metal Forming Problems written by Shiro Kobayashi and published by . This book was released on 1986 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applicability of the finite element method in metal-forming process modeling has been expanded and the use of its capability for solving industrial problems has been demonstrated in the area of; (1) spread analysis in three-dimensional forming processes, (2) perform design and (3) calculation of residual stresses involved in metal forming. In the analysis of spread, sideway spread in block compression between two parallel flat plates was analyzed, using simplified three dimensional eight-node elements. The investigation has been extended to the development of general three-dimensional finite element technique and, the analysis of open-die forging was conducted for producing two size bars. A novel approach to preform design by tracing a loading path backward from a given final configuration was applied to precision preform design in plane-strain rolling. The technique was extended to include the temperature calculation in the scheme and applied to precision preform design in nosing at elevated temperatures. For the investigation of residual stresses, a comprehensive review on the subject has been made, and the finite element program was developed for the determination of residual stresses for radial forging. Keywords: Plastic deformation, Radial forging, Open-die forging, Preform design, Shell nosing.
Download or read book Finite Element Simulation of Residual Stresses from Welding and High Frequency Hammer Peening written by Gkatzogiannis, Stefanos and published by KIT Scientific Publishing. This book was released on 2022-06-30 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research goal of the present monograph is the establishment of an efficient engineering approach, which will include straightforward but accurate simulation models, in order to estimate the residual stress fields of welded joints introduced during welding and their post-weld treatment with High Frequency Hammer Peening. The present subject lies on the intersection of structural engineering, material science and computational mechanics.
Download or read book Nonlinear Finite Element Modeling of Transient Thermo Mechanical Behavior in Selective Laster Melting written by Zhibo Luo and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Selective laser melting (SLM) is a commonly used powder bed fusion (PBF) additive manufacturing (AM) process that fabricates a part through layer-wised method. Due to its ability to build customized and complex parts, SLM process has been broadly studied and applied in both academia and industry. However, rapidly changing thermal cycles and extremely high-temperature gradients in the melt pool induce a periodically changed thermal stress in solidified layers. Different types of manufacturing defects can be induced by this laser melting and layer-wised manufacturing method. These defects are controlled by different process parameters and can be minimized through optimizing these parameters. The high cost is typically the result of experimental trial-and-error methods when they are used to optimize the related process parameters. Therefore, most studies focus on developing numerical methods to estimate transient temperatures and thermal stress distributions in the melt pool and powder bed. The big challenge in the numerical thermo-mechanical analysis of a part during the SLM process is to reduce its high computational cost. The high computational cost origins from the non-linear thermo-elasto-plastic material behavior during the fabrication process, fast laser melting and solidification process, and dynamically changed build domain. Though some numerical methods, such as multiscale method and inherent strain method, have been utilized to model the SLM process, these methods cannot incorporate the influences of many process parameters such as the scanning pattern and scanning speed. In this research, an efficient thermo-mechanical finite element (FE) method aiming to reduce the computational cost is developed to model the SLM process at part level. This simulation scheme is based on an open source FE library named Deal.II, which supports adaptive mesh refinement and parallel computing. High computational cost mainly originates from large cell number and time step number. To reduce the computational cost, the Gaussian line heat source (GLHS) model with a proper time step length was developed to replace the conventional used moving Gaussian point heat source (GPHS) model. In addition, several mesh strategies were developed to reduce the total cell number and timestep number from scanning track level, layer level, and part level, respectively. To achieve a compromise between computational efficiency and solution accuracy, a hybrid of GLHS and GPHS was developed as the input heat flux. The modeling results validated the robustness of the hybrid model. To further improve solution accuracy, temperature-dependent material properties were used and the developed adaptive mesh strategy could always capture the effective heat input by increasing the mesh density around the heat source region. After transient thermal analysis of each step, a thermo-elasto-plastic constitutive model was established to predict the quasi-static mechanical behavior of the material and to calculate the deformation and thermal stress of the deposited layers. A scanning path file was designed to include all necessary process parameters and was used to guide the simulation process track-by-track and layer-by-layer. In summary, the simulation speed is 12 ~ 18 folds faster compared with the conventional simulation scheme. The simulation results were compared with experimental results. The comparison demonstrated that each point in the simulation experienced the same thermo-mechanical cycles as in the experiment. Therefore, the developed simulation scheme in this research can be used to optimize the process parameters, such as scanning pattern, scanning speed, and layer thickness. It also has the potential to be easily extended into other PBF based AM processes"--
Download or read book Development and Application of Finite Element Analysis Methods for Tube Hydroforming of Automotive Components written by Venkatesh Kenthapadi and published by . This book was released on 2003 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element and Experimental Studies of Springback in Sheet Metal Forming written by Fahd Fathi Abd El All and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ultimate goal of the metal forming industry is to form components made of a specific material into a required shape without experiencing wrinkling, bifurcation and springback. Of the aforementioned difficulties, attention in this thesis is devoted to springback resulting from unloading following stretch forming. In spite of the exhaustive application of the process to form many engineering components, the design and selection of sheet materials and tooling geometry to minimize springback still rely on the elusive trial and error approach. It is thus the objective of this thesis to avoid the ad hoc approach by analyzing the process using the finite element method. Three aspects of the current problem are accordingly investigated. The first is concerned with the development of a finite element model of the stretch forming process accounting for material and geometric nonlinearities, and interface conditions using ANSYS software. The second aspect of the work is concerned with the springback experienced by the deformed sheet following the punch release stroke. In the third, attention was focused to the validation of the invite element models. Two alternative test rig designs were developed to test the axisymmetric and the plane strain models. However, in view of cost and time limitations, only the plane strain stretch forming rig was built to test the corresponding FE model. The technique was then applied to a case study concerning the stretch forming of a rear bulkhead for an aircraft. (Abstract shortened by UMI.).
Download or read book Development and Validation of a Finite Element Analysis Model Used to Analyze Coupling Reactions Between a Tractor s Fifthwheel and a Semitrailer s Kingpin written by Brent William Shoffner and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comprehensive Procedure for Developing Crashworthiness Finite Element Models and Its Application written by Abdullatif Khaled Zaouk and published by . This book was released on 2002 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
