FEM analysis of escape capsule suffered to gas explosion

Li, Chang-lu; Mei, Rui-bin; Li, Chang-sheng; Cai, Ban; Liu, Xiang-hua
May 2013
AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p995
Academic Journal
Escape capsules are new devices for underground coal mines that provide air, water, food and supplies in the event of an emergency in where miners are unable to escape. It is difficult to carry out the experiments of explosion and safety because the danger and nonrepeatability of explosion. The structure deformation and distribution of equivalent stress has been investigated under different impact pressure conditions including unimodal and bimodal loads based on the FEM and software LS-DYNA. The results show that the distribution of deformation and equivalent stress has the same trend on the same surface with the increment of explosion pressure. The deformation and stress are larger with side impact pressure compared with that of the same front impact pressure. Furthermore, the maximum equivalent stress is 246MPa and 260MPa on the front and sides of capsule with five times for national standard impact pressure 1.5MPa. Under these conditions, the deformation is less than about 9.97mm and 10.47mm, respectively. When the front impact pressure is 2.0MPa, the deformation of capsule still belongs to elasticity but the less plastic deformation occurs on the Ushape stiffening channels with the same side impact pressure. However, it is safe for capsule structure because the equivalent stress 283MPa is much less than the tensile strength. It is noted that bimodal load accelerates the capsule deformation so that it is more dangerous compared with unimodal load.


Related Articles

  • Computation of Tension Intensity Coefficients in Cracked Thin-Walled Pipes. Rahimi, F.; Shafieenejad, I. // International Review of Mechanical Engineering;Jan2009, Vol. 3 Issue 1, p16 

    In this paper, the weight functions for deep and superficial points of semi elliptical crack, situated in pipes internal surface are achieved Coefficients of tension intensity are introduced into closed solution, using the achieved weight functions for two parabolic pressure loading position on...

  • Comparison of Static and Dynamic Analysis on KJYF96/8 Mobile Refuge Chamber. Zhang An-ning; Gu Yu-ming // Applied Mechanics & Materials;2014, Issue 667-679, p892 

    This paper studied the difference between the static analysis and dynamic analysis on the mobile refuge chamber. The structure strength static analysis of KJYF96/8 mobile refuge chamber was made by the finite element software SolidWorks Simulation and the stress cloud chart and the displacement...

  • Simulation and Analysis of Anti-Explosion Capability for Coal Mine Refuge Chamber. Yuanyuan Zhou; Junlin Wan; Yawei Zhao; Qinjian Mao // Advanced Materials Research;2014, Vol. 941, p2547 

    Experiment research aiming at the anti-explosion capability of the refuge chamber is a complex work with high costs. By using finite element analysis, however, could avoid this issue and implement the simulation and analysis more effectively. Based on transient dynamics approach, numerical...

  • Load distribution in the thread of body. Krenevičius, A.; Leonavičius, M.; Selivonec, J. // Mechanika;2008, Vol. 73 Issue 5, p5 

    This paper presents the analytical model of load distribution in the body thread. The model estimates a variation of longitudinal strains in contiguous to the body thread layer, which takes place at the receeding from the locations of the turn loads. The influence of the wall thickness of the...

  • THREE DIMENSIONAL DYNAMIC STRESS ANALYSES FOR A GEAR TEETH USING FINITE ELEMENT METHOD. Asker, Haval Kamal // Journal of Engineering & Applied Sciences;Jul2012, Vol. 7 Issue 7, p794 

    One of the main goals during load calculations and vibration analysis for gears is the determination of deformation and stress state in teeth contact zones. This paper describes development of the finite element model for simultaneously monitoring the deformation and stress state of teeth flanks...

  • Stress-Strain State and Local Buckling of Perforated Steel Beams with Different Shape Openings. Pritykin, A.; Lavrova, A. // Mechanika;2014 Conference Issue, p219 

    Cellular beams with circular, oval and sinusoidal openings are used in construction practice now. The problems of determination of deformations of such beams and critical loads under local buckling of web are considered. Calculation of cellular I-beams deformations was performed using the finite...

  • Approximate analysis of progressive deformation in honeycomb structures subjected to in-plane loading. Nakamoto, Hiroaki; Adachi, Tadaharu; Higuchi, Masahiro // Archive of Applied Mechanics;Mar2013, Vol. 83 Issue 3, p379 

    Progressive deformation of honeycomb structures subjected to in-plane loading was approximately analyzed by using the collapse modes of hexagonal unit cells. The collapse modes were categorized as freely compressive, restricted compressive, and shear. Moreover, there were five characteristic...

  • Research on the Ride Comfort of Electric Drive System Based on Double Trailing Arm Suspension. Wei Wang; Yan Li; Shan Zhang; Bin Wang // Applied Mechanics & Materials;2014, Issue 607-609, p458 

    Based on double trailing arm suspension, relating to two-wheel-drive structures with inhibition of vertical vibration: a motor-integrated electric wheel-drive system and an electric wheeldrive system of which the motor can swing up and down and act as a dynamic absorber. In the paper a unified...

  • STRESS AND STRAIN ANALYSIS OF A TOWER CRANE ARM. DIANA, ANGHELACHE; SIMONA-ANDRA, CRISTEA; NICOLAE, IACOB // Analele Universitatii Maritime Constanta;2013, Vol. 14 Issue 20, p39 

    This paper presents the analysis of a tower crane arm using the finite elements method. It will be draw a crane arm using sizing technology of the tower crane from the technical prospects of the producer, and for the stress and deformation analysis it will be use the finite element analysis...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics