Dynamics Analysis of Industrial Sewing Machine Frame Based on FEA and Modal Experiment

2013 ◽  
Vol 419 ◽  
pp. 122-126
Author(s):  
Li Zhang ◽  
Chen Kai ◽  
Xue Jiao Wang
Keyword(s):  
3D Model ◽  
Element Model ◽  
Impact Testing ◽  
Testing System ◽  
Dynamics Analysis ◽  
Sewing Machine ◽  
Good Consistency ◽  
The Finite Element Model ◽  
Experiment Analysis ◽  
Abaqus Software

The industrial sewing machine frame is one of the most important components of the sewing machine system, so studying its dynamic characteristics is particularly important. In this paper, based on the 3D model, the theory modal analysis of the industrial sewing machine is conducted with ABAQUS software and the modal experiment analysis is carried out through LMS(Lab Impact Testing system). The experimental results are in good consistency, which shows that the finite element model built in the paper is reasonable. This paper provides theoretical reference for vibration and noise reduction of the industrial sewing machine.

Dynamics Analysis of Break Disc Based on FEA and Modal Experiment

2013 ◽  
Vol 313-314 ◽  
pp. 742-745
Author(s):  
Li Zhang ◽  
Chen Kai ◽  
Ye Tian
Keyword(s):  
3D Model ◽  
Element Model ◽  
Impact Testing ◽  
Testing System ◽  
Brake Disc ◽  
Ansys Software ◽  
Braking System ◽  
Good Consistency ◽  
The Finite Element Model ◽  
Experiment Analysis

The brake disc is one of the most important components of the braking system, so studying its dynamic characteristics is particularly important. In this paper, based on the 3D model, the theory modal analysis of break disc is conducted with ANSYS software and the modal experiment analysis is carried out through LMS(Lab Impact Testing system). The experimental results are in good consistency, which shows that the finite element model built in the paper is reasonable. This paper provides theoretical reference for vibration and noise reduction of the brake disc.

Research on the Arc-Teeth Synchronous Belt's Tooth Load Distribution Caused by the Machining Error

2014 ◽  
Vol 915-916 ◽  
pp. 248-251
Author(s):  
Yao Chen Shi ◽  
Zhan Guo Li ◽  
Hao Li
Keyword(s):  
Load Distribution ◽  
3D Model ◽  
Element Model ◽  
Transmission Performance ◽  
Machining Error ◽  
Machining Errors ◽  
Multibody Dynamic ◽  
Useful Life ◽  
Dynamic Software ◽  
The Finite Element Model

This paper aimed at the machining error of the arc-teeth synchronous belts tooth ,the 3D model was established with CATIA ,the finite element model of belt was established by HYPERMESH ,and using the multibody dynamic software RECURDYN, the models with different machining errors were simulated by rigid-flexible coupling technology. Systematically studied the changing rule of the wedged stress and the contact stress under the influence of the machining error. So it has certain value to enhance the loading capacity, transmission performance and useful life.

Finite Element Analysis of Frame of Dump Truck

2015 ◽  
Vol 733 ◽  
pp. 591-594
Author(s):  
Yong Zhen Zhu ◽  
Kuo Yang ◽  
Qi Yang ◽  
Yun De Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
3D Model ◽  
Element Model ◽  
Dump Truck ◽  
Stress Distributions ◽  
Improved Method ◽  
Element Analysis ◽  
Finite Element Software ◽  
The Finite Element Model

The CAD software was used to establish 3D model of frame of dump truck, and the finite element model was established through Hyper Mesh. The stress distributions of the frame in vertical accelerating, turning, twisting and climbing conditions were computed through finite element software when the dump truck was loaded 80t. The result is consistent with the actual situation of the frame, which proved that the approach of finite element analysis is feasible. And we proposed the improved method of the frame according to finite element results.

A Study of the Partially Prestressed Tendons RPC Concrete Pole Connection Design

2012 ◽  
Vol 166-169 ◽  
pp. 534-537
Author(s):  
Yan Zhong Ju ◽  
Dong Xu Yu ◽  
Wang Dehong
Keyword(s):  
Finite Element ◽  
Ultimate Load ◽  
Design Method ◽  
Element Model ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Practical Design ◽  
Connection Design ◽  
The Finite Element Model ◽  
Abaqus Software

In order to study and solve the problem of connection on the part of the prestressed tendons RPC concrete pole engineering. Design connecting flange suitable for the existing part of the prestressed tendons RPC concrete pole developed by our group used the connection flange in Steel tower as the prototype.Through the ABAQUS software to establish the finite element model between the connection flange and part of the prestressed tendons RPC concrete pole, and carry out finite element analysis.Through the finite element analysis to get results whether the design of connecting flange can meet the strength requirements when the prestressed tendons RPC concrete pole is under ultimate load, so to get the practical design method of the 500kv part prestressed RPC concrete pole connecting flange.

Mechanical Property Comparison Analysis of Two Kinds of Shape Memory Alloy Patella Claws Based on Finite Element Method

2014 ◽  
Vol 633-634 ◽  
pp. 74-77
Author(s):  
Xiao Yan Gong ◽  
Zhe Wu ◽  
Dong Peng Du ◽  
Juan Xing ◽  
Xiang Wen Miu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Shearing Force ◽  
Comparison Analysis ◽  
Orthopedic Device ◽  
Patella Fractures ◽  
New Material ◽  
The Finite Element Model ◽  
Abaqus Software

Memory alloy' is a new material that is widely applied for medical equipment. The successful orthopedic repair of severe transverse patella fractures is being advanced through the use of the 'memory alloy patella claw'. We have refined the basic design of this device, by comparing the mechanical properties of patella claws, before and following after refinement of the claw design using finite element model that are simulated by ABAQUS software. When the same load was imposed on each patella claws, under the same boundary conditions, the stress-strain value of anti-shearing force patella claw was smaller. These data indicate that the finite element model demonstrates an efficient way of designing this orthopedic device to produce effective anti-shearing force patella claws, which is of potentially significant benefit to the treatment of patella fractures.

Structural Optimization of Mine Hoisting Skip Underframe Based on Modal Analysis

2013 ◽  
Vol 850-851 ◽  
pp. 208-211
Author(s):  
Yi Jie Zhang ◽  
Ling Qiong Kong ◽  
Huan Zou
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
3D Model ◽  
Excitation Frequency ◽  
Element Model ◽  
External Excitation ◽  
Modal Test ◽  
Parameterized Model ◽  
The Finite Element Model ◽  
External Excitation Frequency

Aiming at the problems of vibration and noise appeared in the work of lifting the skip underframe of the mine, a parameterized model of the underframe of skip is established by taking advantage of UG. And a finite element modal analysis is done by leading 3D model into the ANSYS, and the credibility of the finite element model is verified by combining the modal test. On the basis of comparing the characteristics of the external excitation frequency, the dynamic characteristics of the underframe of skip are evaluated and the structure is optimized. The results of the optimization indicate that: not only the modal frequency of the first eight orders of the ship underframe has avoided the range of external excitation frequency, with a smooth mode of vibration, avoiding the occurrence of sympathetic vibration effectively, but it has lost a weight of 10.6%, achieving an improvement of the hoisting capacity of the skip equipment. This research is of important reference to the technical transformation of skip equipment for some mine enterprise.

Finite Element Analysis for Frame of Lift Transporter

2012 ◽  
Vol 538-541 ◽  
pp. 616-620
Author(s):  
Jie Tian ◽  
Guang Bing Xiao ◽  
Wen Dong Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
3D Model ◽  
Element Model ◽  
3D Models ◽  
Static Properties ◽  
Element Analysis ◽  
The Finite Element Model ◽  
Ansys Workbench

The 3D-model of lift transporter frame was assembled by the parts, whose 3D-models were established under UG. And the finite element model was achieved in ANSYS/ Workbench. Four different analysis conditions were developed and the static properties of the frame in various conditions were analyzed by ANSYS/Workbench. The analysis results indicate that the design of the special frame is feasible.

scholarly journals An efficient homogenization method using the trigonometric interpolation and the fast fourier transform

2011 ◽  
Vol 33 (4) ◽  
pp. 215-223
Author(s):  
Ngoc-Trung Nguyen ◽  
Christian Licht ◽  
Jin-Hwe Kweon
Keyword(s):  
Finite Element ◽  
Grid Point ◽  
Element Model ◽  
Homogenization Method ◽  
Trigonometric Interpolation ◽  
Element Mesh ◽  
Homogenization Problem ◽  
Mesh Topology ◽  
Good Consistency ◽  
The Finite Element Model

This study focuses on formulation of the Augmented Lagrangian and application of the Uzawa's algorithm to solve the homogenization problem of microscopic periodic media as in composites. Unlike in the finite element model, an equally spaced grid system associated with the microstructure domain is used instead of a finite element mesh topology. Moreover, the trigonometric interpolations for the field variables at every grid point help to handle the periodic conditions. The proposed approach is a compromise between Lagrange multiplier and penalty methods, in that it enables exact representation of constraints while using penalty terms to facilitate the iteration procedure. A typical homogenization problem will be solved using this approach. The results show good consistency with those in literatures. Effects of the grid density and the penalty parameter on the convergence have also been investigated.

Redrawing Operation a Star Shape from Cylindrical Shape Using Experimental and FE Analysis

2020 ◽  
Vol 38 (1A) ◽  
pp. 25-32
Author(s):  
Waleed Kh. Jawad ◽  
Ali T. Ikal
Keyword(s):  
Finite Element ◽  
Effective Strain ◽  
Element Model ◽  
Cylindrical Shape ◽  
Element Analysis ◽  
Punch Force ◽  
Maximum Value ◽  
Element Simulation ◽  
Blank Sheet ◽  
The Finite Element Model

The aim of this paper is to design and fabricate a star die and a cylindrical die to produce a star shape by redrawing the cylindrical shape and comparing it to the conventional method of producing a star cup drawn from the circular blank sheet using experimental (EXP) and finite element simulation (FES). The redrawing and drawing process was done to produce a star cup with the dimension of (41.5 × 34.69mm), and (30 mm). The finite element model is performed via mechanical APDL ANSYS18.0 to modulate the redrawing and drawing operation. The results of finite element analysis were compared with the experimental results and it is found that the maximum punch force (39.12KN) recorded with the production of a star shape drawn from the circular blank sheet when comparing the punch force (32.33 KN) recorded when redrawing the cylindrical shape into a star shape. This is due to the exposure of the cup produced drawn from the blank to the highest tensile stress. The highest value of the effective stress (709MPa) and effective strain (0.751) recorded with the star shape drawn from a circular blank sheet. The maximum value of lamination (8.707%) is recorded at the cup curling (the concave area) with the first method compared to the maximum value of lamination (5.822%) recorded at the cup curling (the concave area) with the second method because of this exposure to the highest concentration of stresses. The best distribution of thickness, strains, and stresses when producing a star shape by

scholarly journals A computationally efficient hybrid 2D–3D subwoofer model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ahmad H. Bokhari ◽  
Martin Berggren ◽  
Daniel Noreland ◽  
Eddie Wadbro
Keyword(s):  
Hybrid Model ◽  
3D Model ◽  
Element Model ◽  
Acoustic Properties ◽  
Computational Time ◽  
Average Response ◽  
Frequency Range ◽  
Computationally Efficient ◽  
Lumped Element ◽  
Lumped Element Model

AbstractA subwoofer generates the lowest frequency range in loudspeaker systems. Subwoofers are used in audio systems for live concerts, movie theatres, home theatres, gaming consoles, cars, etc. During the last decades, numerical simulations have emerged as a cost- and time-efficient complement to traditional experiments in the design process of different products. The aim of this study is to reduce the computational time of simulating the average response for a given subwoofer design. To this end, we propose a hybrid 2D–3D model that reduces the computational time significantly compared to a full 3D model. The hybrid model describes the interaction between different subwoofer components as interacting modules whose acoustic properties can partly be pre-computed. This allows us to efficiently compute the performance of different subwoofer design layouts. The results of the hybrid model are validated against both a lumped element model and a full 3D model over a frequency band of interest. The hybrid model is found to be both accurate and computationally efficient.

Sign in / Sign up

Export Citation Format

Share Document