scholarly journals Dynamic method for determining critical loads in the PRINS computer program

2020 ◽  
Vol 16 (5) ◽  
pp. 380-389
Author(s):  
Vladimir P. Agapov ◽  
Alexey S. Markovich
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Computer Program ◽  
Critical Loads ◽  
Buckling Analysis ◽  
Practical Implementation ◽  
Element Analysis ◽  
Software Products ◽  
Calculation Results ◽  
Project Organizations

Relevance. Buckling analysis is important in the design of buildings and structures. It is used in various fields of engineering - mechanical engineering, aircraft and shipbuilding, civil engineering, etc. Until the second half of the twentieth century, mainly analytical methods of buckling were applied in practice. With the appearance of computers, numerical methods, in particular, the finite element analysis, began to prevail. Buckling analysis was implemented in programs of finite element analysis, such as NASTRAN, ANSYS, ABAQUS, ADAMS, DIANA, and others. In view of great responsibility, buckling analysis of structure should be carried out using at least two different programs. However, due to the high cost of software products, not all project organizations are able to have a number of programs. An alternative is to develop programs that can complete buckling analysis using several methods. This would increase the reliability and quality of calculation results. The PRINS computer program has opportunity for buckling analysis using two methods - static and dynamic. The aims of the work - to show the theoretical aspects and practical implementation of the dynamic principle of buckling analysis in buildings and structures using finite element method, as well as to give the algorithm implemented in the PRINS program and the results of verification calculations confirming its reliability. Results. The algorithm presented in this article and implemented in the PRINS computer program allows to determine critical loads using a dynamic buckling criterion. On the basis of numerous verification calculations, it was established that the implemented algorithm was effective for determining critical loads in frame, thin-walled and ribbed plate structures. The use of the PRINS computer program enables to use an alternative method for determining critical loads for a wide class of engineering problems in addition to the classical (static) method.

Finite Element Analysis of Tianerya Trench-Buried Inverted Siphon

2013 ◽  
Vol 804 ◽  
pp. 320-324
Author(s):  
Xiang Zan Xie
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Calculation ◽  
Construction Process ◽  
Element Calculation ◽  
Element Analysis ◽  
Operational Process ◽  
Inverted Siphon ◽  
Calculation Results ◽  
Calculation Software

This paper adopts universal finite element calculation software to carry out finite element analysis for Tianerya trench-buried inverted siphon. Researching variation law of the inverted siphons stress and displacement in construction process and operational process. The calculation results further shown design schemes rationality and safety. The analysis results provide a certain reference for design of trench-buried inverted siphon structure.

scholarly journals Method of Calculating the Inductance Value of MEMS Suspended Inductors with Silicon Substrates

Micromachines ◽  
2018 ◽  
Vol 9 (11) ◽  
pp. 604 ◽  
Author(s):  
Yiyuan Li ◽  
Jianhua Li ◽  
Lixin Xu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Basic Component ◽  
Silicon Substrates ◽  
Element Analysis ◽  
Microelectromechanical System ◽  
Single Turn ◽  
Inductor Coil ◽  
Calculation Results ◽  
Rf Performance

Microelectromechanical system (MEMS) suspended inductors have excellent radio-frequency (RF) performance. The inductance value is one of the main features that characterizes the performance of inductors. It is important to consider the influence of the substrate and the suspension height in calculating the inductance value accurately. In this paper, a method is proposed to calculate the inductance value of the MEMS suspended inductor wire with a silicon substrate, as the wire is the basic component of the inductor coil. Then the method is extended to the suspended inductors consisting of a single turn coil. The calculation results obtained by this proposed method were verified by finite-element analysis (HFSS) and they were found to agree well with the results of the HFSS simulation.

The Finite Element Analysis and Optimization of Subway Steel Structure Work Platform Based on Workbench and Pro/E in a Subway

2012 ◽  
Vol 538-541 ◽  
pp. 2953-2956
Author(s):  
Ya Li ◽  
Guang Sheng Ren
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Characteristics ◽  
Steel Structure ◽  
Strength Analysis ◽  
Element Analysis ◽  
Maximum Deformation ◽  
Software Model ◽  
The Finite Element Analysis ◽  
Calculation Results

The static and stability analysis of steel structure were taken according to steel structure work platform’s requirements and structural characteristics in a subway parking space by using the software model which is established by Pro/E software and implanted into the finite element analysis software ANSYS Workbench. The maximum deformation and stress in design load of the steel structure were calculated and the linear stress strength analysis of the key parts was carried out, also both the analysis and testing of the supporting pillar’s stability were performed. The results show that the structure model established by Pro/E and the calculation method are reasonable. Moreover, the calculation results are of high accuracy. The profile size is properly chosen and the structure bearing capacity and deformation meet the design requirements.

Optimal Design of a Double-Sided Slotted Iron Core Type PMLSM with Manufacturing Considerations

2010 ◽  
Vol 670 ◽  
pp. 235-242 ◽  
Author(s):  
Y.W. Zhu ◽  
D.S. Kim ◽  
D.H. Kooa ◽  
Y.H. Cho
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Response Surface Methodology ◽  
Numerical Calculation ◽  
Optimal Design ◽  
Iron Core ◽  
Two Dimensional ◽  
Element Analysis ◽  
Detent Force ◽  
Calculation Results

This paper investigates an optimal design of a double-sided slotted iron core type permanent magnet linear synchronous motor (PMLSM) using for ropeless elevator system. To obtain the optimal structure, the combination of response surface methodology (RSM) and two dimensional (2D) finite element analysis (FEA), which can solve the problem effectively without much time consuming, is utilized to investigate the PMLSM characteristics. Moreover, the detent force is more detailed analyzed with the manufacturing consideration. In final some numerical calculation results are reported to validate the applicability of this double-sided slotted iron core type PMLSM in ropeless elevator system. Introduction

Finite Element Analysis on Frame Structure of Light Steel Temporary Buildings

2013 ◽  
Vol 351-352 ◽  
pp. 808-811
Author(s):  
Zheng Zhang ◽  
Xue Feng Cai ◽  
Yong Chao Ma ◽  
Ji Zhong Zhou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Simple Structure ◽  
Theoretical Study ◽  
Frame Structure ◽  
Structure Model ◽  
Construction Site ◽  
Element Analysis ◽  
Calculation Results ◽  
Design Loads

Light steel temporary building is commonly used in the construction site, with advantages on simple structure, repeat used and small deadweight. For light steel temporary structure building there are still not enough researches on the mechanical properties and mechanism of action, and there are still not enough relevant standards and requirements to conduct the design and construction of the buildings. In order to precede to theoretical study on frame structure of light steel temporary buildings a method by Finite Element Analysis was proposed. This method is based on FEA software, Ansys. Using this method a monolayer frame structure and a two-story frame structure and a trilaminar frame structure model were analyzed. The calculation results of horizontal displacements under design loads by FEA were obtained and discussed.

Buckling Analysis of the Hydraulic Support Column Based on ANSYS

2012 ◽  
Vol 500 ◽  
pp. 434-439
Author(s):  
Y.K. Zhang ◽  
L.J. Xiao ◽  
Rui Chuan Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Result ◽  
Theoretical Calculation ◽  
Buckling Analysis ◽  
Hydraulic Support ◽  
Element Analysis ◽  
Critical Buckling Load ◽  
Analogue Simulation ◽  
The Finite Element Analysis

The buckling of hydraulic support column is analyzed theoretically with the theory of the pressure rod stability. 3D digital model of the hydraulic support column is built with Pro/E, also buckling analysis and analogue simulation with ANSYS to the model are carried out. The critical buckling load of the column is obtained. The buckling analysis result is picked up and discussed, and compared with the theoretical calculation. The finite element analysis result is agreed with the theoretical result.

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