Application of the energy finite element analysis to vibration of beams with stepped thickness and variable cross-section

Bulge forming is a novel process aimed at common products including T-branches, cross branches and angle branches. But bulging forming has not applied for two-head abnormity-shaped hollow screw rotor reported in literature. Simulation of the bulging forming of two-head abnormity-shaped hollow screw rotor has not been reported. This paper presents a simulation of the bulge forming process of two-head abnormity-shaped hollow screw rotor using a variable cross-section solid bulging mold. Some conditions including the effect of friction, boundary conditions, contact conditions and the space motion, etc are presented. The mathematical model of three-dimensional finite element analysis has been established. The distribution of generalized plastic strain and general metal flow mode in cross section of two abnormity-shaped hollow screw rotor has been analyzed. It is an effective method for the analysis of other defects and the optimization of process parameters further.

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Finite Element Analysis for the Collapse Accident of a 110kV Transmission Tower

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.986-987.927 ◽

2014 ◽

Vol 986-987 ◽

pp. 927-930

Author(s):

Yi Zhu ◽

Bo Li ◽

Hao Wang ◽

Kun Li

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Cross Section ◽

Strong Wind ◽

Transmission Tower ◽

Element Analysis ◽

Straight Line ◽

The Finite Element Analysis

Put the finite element analysis of line tower coupling modeling to the collapse of a 110 kV line straight-line tower, study the effect of strong wind on transmission tower and wire. The results show that under the action of strong wind, the material specification selected by the part of the rods on the type of tower is lower, cross section is smaller, the principal material of tower will be instable and flexional under the compression, resulting in tower collapsed.

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Linear Thermomechanical Microactuators

10.1115/imece1999-0265 ◽

1999 ◽

Author(s):

Rebecca Cragun ◽

Larry L. Howell

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Thermal Expansion ◽

Cross Sections ◽

Variable Cross ◽

Element Analysis ◽

Thermal Actuators ◽

Output Force ◽

Analysis Models ◽

High Output

Abstract Thermomechanical in-plane microactuators (TIMs) have been designed, modeled, fabricated, and tested. TIMs offer an alternative to arrays of smaller thermal actuators to obtain high output forces. The design is easily modified to obtain the desired output force or deflection for specific applications. The operational principle is based on the symmetrical thermal expansion of variable cross sections of the surface micromachined microdevice. Sixteen configurations of TIMs were fabricated of polysilicon. Finite element analysis models were used to predict the deflection and output force for the actuators. Experimental results were also recorded for all sixteen configurations, including deflections and output forces up to 20 micron and 35 dyne.

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The mixed finite element solution of helical beams with variable cross-section under arbitrary loading

Computers & Structures ◽

10.1016/0045-7949(92)90149-t ◽

1992 ◽

Vol 43 (2) ◽

pp. 325-331 ◽

Cited By ~ 24

Author(s):

M.H. Omurtag ◽

A.Y. Aköz

Keyword(s):

Finite Element ◽

Cross Section ◽

Mixed Finite Element ◽

Variable Cross Section ◽

Finite Element Solution ◽

Variable Cross ◽

Element Solution ◽

Arbitrary Loading

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Investigation of the Prediction Accuracy of a Finite Element Analysis Model for the Coating Thickness in Cross-Wedge Rolled Coaxial Hybrid Parts

Materials ◽

10.3390/ma12182969 ◽

2019 ◽

Vol 12 (18) ◽

pp. 2969 ◽

Cited By ~ 1

Author(s):

Jagodzinski ◽

Kruse ◽

Barroi ◽

Mildebrath ◽

Langner ◽

...

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Cross Section ◽

Coating Thickness ◽

Wedge Angle ◽

Research Centre ◽

Cross Wedge Rolling ◽

Element Analysis ◽

Hybrid Parts ◽

Experimental Trials

The Collaborative Research Centre 1153 (CRC 1153) “Process chain for the production of hybrid high-performance components through tailored forming” aims to develop new process chains for the production of hybrid bulk components using joined semi-finished workpieces. The subproject B1 investigates the formability of hybrid parts using cross-wedge rolling. This study investigates the reduction of the coating thickness of coaxially arranged semi-finished hybrid parts through cross-wedge rolling. The investigated parts are made of two steels (1.0460 and 1.4718) via laser cladding with hot-wire. The rolling process is designed by finite element (FE)-simulations and later experimentally investigated. Research priorities include investigations of the difference in the coating thickness of the laser cladded 1.4718 before and after cross-wedge rolling depending on the wedge angle β, cross-section reduction ∆A, and the forming speed ν. Also, the simulations and the experimental trials are compared to verify the possibility of predicting the thickness via finite element analysis (FEA). The main finding was the ability to describe the forming behavior of coaxially arranged hybrid parts at a cross-section reduction of 20% using FEA. For a cross-section reduction of 70% the results showed a larger deviation between simulation and experimental trials. The deviations were between 0.8% and 26.2%.

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