scholarly journals A Module For Teaching Fundamentals Of Finite Element Theory And Practice Using Elementary Mechanics Of Materials

2020 ◽  
Author(s):  
William O. Jolley ◽  
Hartley T. Grandin ◽  
Joseph Rencis
Keyword(s):  
Finite Element ◽  
Theory And Practice ◽  
Mechanics Of Materials ◽  
Elementary Mechanics ◽  
Element Theory

Study on the Structure of the Flexspline of Harmonic Reducer

2013 ◽  
Vol 385-386 ◽  
pp. 344-347
Author(s):  
Xin Wang ◽  
Xuan Zhou ◽  
Cheng Qun Li
Keyword(s):  
Finite Element ◽  
Optimization Design ◽  
Equivalent Stress ◽  
Equivalent Strain ◽  
Work Process ◽  
Fem Model ◽  
Finite Element Software ◽  
Mechanics Of Materials ◽  
Wave Generator ◽  
Element Theory

According to the flexible gears damage problem during the work process of the harmonic reducer, a FEM model of the flexible and wave generator was established. On the basis of the mechanics of materials and the finite element theory, a large number of numerical simulations by the use of the finite element software were made. The analysis shows that: the dangerous area is between the flexspline tooth rim and cylinder part. On this basis, the equivalent strain and equivalent stress at different transition fillet were discussed by the use of numerical simulation. The results show that: the equivalent strain and equivalent stress are decrease with the increase of the transition fillet. It provides a basis theory of the optimization design of the flexspline.

Nonlinear Dynamic Response of Buoys under the Collision Load with Ships

2012 ◽  
Vol 204-208 ◽  
pp. 4455-4459 ◽  
Author(s):  
Liu Hong Chang ◽  
Chang Bo Jiang ◽  
Man Jun Liao ◽  
Xiong Xiao
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Analysis Software ◽  
Element Analysis ◽  
Nonlinear Dynamic Response ◽  
Dynamic Finite Element ◽  
Simulation Results ◽  
Collision Force ◽  
Explicit Dynamic ◽  
Element Theory

The explicit dynamic finite element theory is applied on the collision of ships with buoys for computer simulation. Using ANSYS/LS-DYNA finite element analysis software, the numerical simulation of the collision between the ton ship and the buoy with different structures and impact points. The collision force, deformation, displacement parameters and the weak impact points of a buoy are obtained. Based on the numerical simulation results, analysis of buoys and structural collision damages in anti-collision features are discussed, and several theoretical sugestions in anti-collision for the design of buoy are provided.

Simulation of Excavation Process for Deep Foundation Pit Base on Nonlinear Finite Element Theory

2015 ◽  
Vol 744-746 ◽  
pp. 579-583
Author(s):  
Hui Min Wang ◽  
Zhen Jian Ji ◽  
Liang Cao ◽  
Ji Yao ◽  
Shan Guang Qian
Keyword(s):  
Finite Element ◽  
Safety Evaluation ◽  
Nonlinear Finite Element ◽  
Distribution Law ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Simulation Research ◽  
Deep Foundation Pit ◽  
Excavation Process ◽  
Element Theory

Deep Pit is the main content of modern urban geotechnical engineering. In this paper, based on a deep foundation pit engineering as an example, based on the nonlinear finite element theory, conduct a numerical simulation research for foundation pit excavation process. Obtained the distribution law of pit deformation, stress distribution and the supporting structure of the internal forces, under the various processes. These provide a theoretical basis for safety evaluation of foundation pit engineering.

The Dynamic Finite Element Analysis of Shearer’s Running Gear Based on LS-DYNA

2011 ◽  
Vol 402 ◽  
pp. 753-757 ◽  
Author(s):  
Hai Long Tong ◽  
Zhong Hai Liu ◽  
Li Yin ◽  
Quan Jin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Simulation Analysis ◽  
Dynamic Contact ◽  
Secondary Development ◽  
Element Analysis ◽  
Dynamic Finite Element ◽  
Dynamic Finite Element Analysis ◽  
Element Theory ◽  
Meshing Process

Base on contact kinetics finite element theory, proceed secondary development of road wheel and pin mesh’s nonlinear dynamic contact analysis in LS-DYNA module, and carry out contrast of simulation analysis, achieved stress, strain and dynamic identities that caused by meshing impact in the whole meshing process, accord with practice, can instruct product practice design.

Reliability of Vibration Transfer Path Systems

2015 ◽  
Vol 752-753 ◽  
pp. 778-783 ◽  
Author(s):  
Wei Zhao ◽  
Ping Chen ◽  
Yi Min Zhang
Keyword(s):  
Finite Element ◽  
Theoretical Foundation ◽  
Stochastic Finite Element ◽  
Dynamic Design ◽  
Transfer Path ◽  
Practical Project ◽  
Mathematical Expressions ◽  
Matrix Calculus ◽  
The Matrix ◽  
Element Theory

Based on the matrix calculus, the generalized second moment technique and the stochastic finite element theory, the effective approach for the transfer reliability of vibration transfer path systems was presented. The transfer reliability of vibration transfer path systems with uncertain path parameters including mass and stiffness was analyzed theoretically and computed numerically, and the correlated mathematical expressions were obtained. Thus, it provides the theoretical foundation for the dynamic design of vibration systems in practical project, so that most uncertain factors can be considered to solve the random problems for vibration transfer path systems.

Statics Analysis of Integral Impeller Based on Finite Element

2013 ◽  
Vol 753-755 ◽  
pp. 1124-1127
Author(s):  
Li Da Zhu ◽  
Shuai Xu ◽  
Wen Wen Liu ◽  
Ji Jiang Wu ◽  
Jian Shi ◽  
...  
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Stress And Strain ◽  
Total Deformation ◽  
Suction Surface ◽  
Maximum Deformation ◽  
Blade Tip ◽  
Tip Position ◽  
Element Theory ◽  
The Finite Element Model

Aim at the problem of machining integral impeller, a method of using finite element theory to carry out the statics analysis of impeller in this paper is studied. The finite element model is established, and then the nephogram of the impeller stress, strain and total deformation are obtained. The result is attained: in the case of impeller rotation and statics load, the maximum of stress and strain occur at the root of suction surface, the maximum of total deformation occurs on the blade tip position of suction surface, while the maximum deformation position has not changed, which increases with the increasing of rotation and statics load. The data results provide a theoretical reference for the machining of integral impeller.

scholarly journals Study on the Effect of Different Delamination Defects on Buckling Behavior of Spar Cap in Wind Turbine Blade

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Jianwei Li ◽  
Jinghua Wang ◽  
Leian Zhang ◽  
Xuemei Huang ◽  
Yongfeng Yu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Reference Value ◽  
Element Model ◽  
Theory And Practice ◽  
The Finite Element Method ◽  
Buckling Behavior ◽  
Element Method

Delamination is detrimental to the composite materials, and it may occur in the manufacturing process of the unidirectional laminate of the spar cap in wind turbine blades. This paper studies the effect of different delamination defects on the strength of the unidirectional laminate. The finite element model of laminate with different delamination areas and delamination heights is established using solid elements. The eigenvalues of laminates have different parameters calculated based on the finite element method. The final coupon test is used to verify the conclusions of simulation results. The finite element method presented in this study shows excellent capabilities to predict the buckling behavior of the laminate. The buckling eigenvalue of tested laminate is negatively correlated with the delamination area and positively correlated with the delamination height under the edgewise load. The S11, which is too high at the boundary of the delamination region, plays a significant role in buckling failure. It has a particular reference value for testing the laminate of blade both in theory and practice.

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