Contact Analysis between Packer Slips and Casing Based on Abaqus

2013 ◽  
Vol 850-851 ◽  
pp. 262-265
Author(s):  
Yuan Wang ◽  
Quan Jie Gao ◽  
Fei Long Zheng
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Working Conditions ◽  
Contact Analysis ◽  
Oil Yield ◽  
Rubber Tube ◽  
Finite Element Software ◽  
Production Safety

The slips on packer play an important role on supporting packer and locking rubber tube after they have been anchored, and their performance directly affects the oil yield and production safety. In this paper, the contact between a type of packer slips and casing is analyzed using the finite element software Abaqus, the stress and displacement fringe graphs of the casing under working conditions are obtained, and it offers the guidance on optimal design for packer slips.

Optimal Design of the Large-Diameter Spinning Torispherical Head

2012 ◽  
Vol 544 ◽  
pp. 194-199
Author(s):  
Di Zhang ◽  
Shui Ping Sheng ◽  
Zeng Liang Gao
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Large Diameter ◽  
General Purpose ◽  
Design Tool ◽  
Crown Area ◽  
Finite Element Software ◽  
The Stability

Two important parameters of torispherical head that are (interior radius of spherical crown area) and r (interior radius of transition corner) have been optimized by the module of the large general-purpose finite-element software ANSYS, targeting the strength and stability of the head. This paper provides an optimized torispherical head, which improves the stability of the edge of the head with acceptable strength of the head. The procedure is generally applicable as a design tool for optimal design.

The Influence of the Leading Wheel Structural Change on Stress of Multi-Rope Friction Hoist

2013 ◽  
Vol 670 ◽  
pp. 48-53 ◽  
Author(s):  
Guang Lin Zhou ◽  
W.J. Chu
Keyword(s):  
Finite Element ◽  
Structural Change ◽  
Service Life ◽  
Working Conditions ◽  
Weld Bead ◽  
Rational Structure ◽  
Open Problems ◽  
Finite Element Software ◽  
Stress Fluctuation

To avoid the open problems of the leading wheel and get a more rational structure, the paper uses PRO / E and the finite element software to analyze the leading wheel of JKM-3.25/4 multi-rope friction hoist. The results show that in the leading wheel the rib plates between the channel steel and wheel hub are removed or added the same ones will have little effect on the overall force situation, and only affect the stress of the weld bead. To solve the problem of open weld of rib plates, can consider the rib plates to be removed. When the radial angle between support wheel and drum is bigger than 6°, the overall force of the leading wheel is affected seriously. But when the radial angle is 5°, the amplitude of stress fluctuation is the minimum, which can improve the leading wheel working conditions and increase the service life of the leading wheel. Therefore the suggestion is to take the radial angle of 5° when to design the new multi-rope hoist. Study conclusions provide the theoretical supports for the leading wheel of multi-rope friction design and technical renovation.

Analysis of Jib Strength and Broken Jib Accident of High Pedestal Jib Crane from the Perspective of Mechanics

2012 ◽  
Vol 164 ◽  
pp. 322-325 ◽  
Author(s):  
Qing Dun Zeng ◽  
Fang Liu
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Tensile Force ◽  
Compressive Force ◽  
Guangdong Province ◽  
Solid Model ◽  
Finite Element Software ◽  
Actual Working

According to an example of the broken jib accident of a high pedestal jib crane (HM2564) in a Shipyard Co., Ltd. in Guangdong province, this paper used a finite element software ANSYS to establish a solid model for the jib frame of the crane, calculated the stresses of jib system under various actual working conditions and checked the strengths. Simultaneously, the reasons of broken jib were quantitatively analyzed from the perspective of mechanics. The results show that the strengths of the jib system meet the requirements of safe use under all kinds of working conditions, but the related hoistman incorrectly operated the facility, cables can’t be winded normally in pulleys, thus resulting in that the tensile force of a cable was directly applied on the main jib by pulley spindle and the failure of the jib frame occurred under heavy compressive force of lifting cables.

scholarly journals A Braked Tail Cover Separation Concept and Simulation of Separation Process

2018 ◽  
Vol 166 ◽  
pp. 02003
Author(s):  
Mei Huang ◽  
Yi Jiang ◽  
Boman Wang
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Large Scale ◽  
Rocket Engine ◽  
Separation Process ◽  
Separation Device ◽  
Internal Ballistic ◽  
Finite Element Software ◽  
New Type

Large-scale missiles are generally catapulted by the ejector. And a tail cover is used to protect the first stage rocket engine. When the missile reaches the predetermined height, the tail cover should be separated timely so that the engine can work properly. In this paper, a braked tail cover separation concept is proposed. And a new type of tail cover separation device is designed according to the concept. Firstly, the forces analysis and the internal ballistic simulation of ejection are conducted before setting working conditions. And then, the finite element software Abaqus is adopted to achieve the simulation of tail cover separation process. Through analyzing the obtained results, it’s concluded that the braked tail cover separation concept is feasible. Moreover, the influence of material changes on the braking effects is also studied.

Analysis of Instant Contact Nonlinear on Round Link Chain Based on Symmetric Penalty Function Method

2011 ◽  
Vol 148-149 ◽  
pp. 272-275
Author(s):  
Wei Kang Li ◽  
Jun Mao ◽  
Xin Le Yang
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Penalty Function ◽  
Function Method ◽  
Penalty Function Method ◽  
Element Analysis ◽  
Finite Element Software ◽  
Sudden Loading ◽  
Contact Impact ◽  
Stress And Deformation

In order to analyze deformation and stress state of round link chain which is generated by driving sprocket for sudden loading or starting moment between the chains during the working conditions, the symmetric penalty function method was utilized in contact-impact interface of LS-DYNA program and the finite element software ANSYS/LS-DYNA was used to carry on 3D nonlinear contact analysis of three round link chains, the curves of stress and deformation with varying time were gained by simulating the process of the instant contact-impact of chains. The results show that the largest stress value is appeared on the contacting curved arm of driven round link chain, the second stress value is connecting round link chain, the least stress value is driving round link chain; it is circular shape of the contact area of round link chains and it is the main reasons of damage that the largest stress and deformation values of impact is caused by instant changing loading when time lasts 0.05s, and the series gradually fluctuation of strength is led to fatigue through finite element analysis software. The symmetric penalty function method of finite elements can provide a theoretical basis and simulation methods for analyzing the round link chain driving in a variety of different working conditions under the conditions of contact-impact.

Finite Element Static Analysis for Frame of Material Conveyor Base on ANSYS

2012 ◽  
Vol 166-169 ◽  
pp. 944-947
Author(s):  
Yu Xie ◽  
Guang Ping Li ◽  
Jiu Rong Fan
Keyword(s):  
Finite Element ◽  
Static Analysis ◽  
Working Conditions ◽  
Deformation Modulus ◽  
Finite Element Software

In this paper, using Solide-edge and Finite element software the model of frame of material conveyor was established, and the static analysis for the frame of material conveyor was analyzed. The deformation modulus and stiffness load in different working conditions was obtained, and the strength of the frame meets the requirements was checked. The reference of frame of material conveyor design was provided.

Analysis on Strength, Stiffness and Stability for Shippment Structure of Hull Subsection

2012 ◽  
Vol 166-169 ◽  
pp. 1019-1022
Author(s):  
Qing Dun Zeng ◽  
Meng Hua Qiao
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Theoretical Foundation ◽  
Horizontal Displacement ◽  
Internal Force ◽  
National Standards ◽  
Solid Model ◽  
Safety Requirements ◽  
Finite Element Software ◽  
Actual Working

In allusion to the safety problems of the shippment structure of hull subsection at area B in a Shipyard Co., Ltd., Guangdong, in this paper, a solid model for a proposed shippment structure of hull subsection was established by using a finite element software ANSYS which is a common software, the internal force (stress), deformation and stability of components under various actual working conditions were calculated, and then the checks of strength, stiffness and stability were performed on the basis of the national regulations. The results show that both strength and stability can meet the safety requirements of operation, but stiffness is insufficient, because the horizontal displacement of steel pillars in shippment structure oversteps the specified value of the national standards of China. The conclusion provides a theoretical foundation for the safety use of shippment structure of hull subsection and the optimization and improvement of the structure.

Finite Element-Based Numerical Investigations of a Beamlike Actuator Combining Shape Memory and Superelastic Effects

2019 ◽  
Author(s):  
Danillo C. Reis ◽  
Domingos A. Rade ◽  
Osmar S. Santos
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Shape Memory ◽  
Numerical Optimization ◽  
Cantilever Beams ◽  
Thermomechanical Model ◽  
Maximum Displacement ◽  
Numerical Investigations ◽  
Finite Element Software ◽  
Superelastic Effect

Abstract It has been amply demonstrated that the development of SMA actuators has a great potential of application in several branches of industry. Obviously, the efficiency of the actuators depends both on the inherent features of the materials they are made of and the geometric characteristics of the devices. This work considers a particular type of actuator first conceived by [1], consisting in the association of two cantilever beams, the first presenting the shape memory effect and the second presenting the superelastic effect, coupled mechanically so as to guarantee two equilibrium positions and thus a stand-alone cyclic actuator, in which the superelastic beam provides the bias action. Numerical simulations of the behavior of the actuator are performed using the commercial finite element software COMSOL, which implements the Boyd-Lagoudas thermomechanical model. The goal of the simulations is to characterize the actuation range of the actuator, in terms of maximum displacement obtained at the tip. The effect of the dimensions of the beams on the tip displacement under some load scenarios is investigated. The results provide guidelines for the design of the actuator to fulfill specific requirements, also suggesting the use of numerical optimization for the optimal design of the actuator accounting for constraints.

Optimal Design and Contact Analysis for Planetary Roller Screw

2011 ◽  
Vol 86 ◽  
pp. 361-364 ◽  
Author(s):  
Shang Jun Ma ◽  
Geng Liu ◽  
Jian Xing Zhou ◽  
Rui Ting Tong
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Stress Distribution ◽  
3D Model ◽  
Structural Parameters ◽  
Contact Analysis ◽  
Contact Deformation ◽  
Roller Screw

Based on the meshing principle of Planetary Roller Screw (PRS), the meshing clearance of screw pair is minimized by taking the half of thread angle, and the pitch diameter tooth thickness, e, as the optimization variables. Optimal structural parameters are obtained by using optimization module of the software Matlab. The 3D model of PRS structures are established with Solidworks and the finite element contact analysis is carried out with Ansys. The contact deformation and stress distribution are calculated among screw, rollers and nut. The results can be used for PRS design.

Parametric finite element modeling and tooth contact analysis of spur and helical gears including profile and lead modifications

2017 ◽  
Vol 34 (8) ◽  
pp. 2877-2898 ◽  
Author(s):  
Yanzhong Wang ◽  
Yang Liu ◽  
Wen Tang ◽  
Peng Liu
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Contact Analysis ◽  
Tooth Contact Analysis ◽  
Element Analysis ◽  
Tooth Contact ◽  
Content Type ◽  
Helical Gears ◽  
Element Modeling ◽  
Finite Element Software

Purpose The finite element method has been increasingly applied in stress, thermal and dynamic analysis of gear transmissions. Preparing the models with different design and modification parameters for the finite element analysis is a time-consuming and highly skilled burden. Design/methodology/approach To simplify the preprocessing work of the analysis, a parametric finite element modeling method for spur and helical gears including profile and lead modification is developed. The information about the nodes and elements is obtained and exported into the finite element software to generate the finite element model of the gear automatically. Findings By using the three-dimensional finite element tooth contact analysis method, the effects of tooth modifications on the transmission error and contact stress of spur and helical gears are presented. Originality/value The results demonstrate that the proposed method is useful for verifying the modification parameters of spur and helical gears in the case of deformations and misalignments.

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