Finite Element Analysis of Potential Liner Failures During Operation in Spherical Pressure Vessel

Pramod, R.; Shanmugam, N. Siva; Krishnadasan, C. K.; Sankaranarayanasamy, K.

doi:10.1007/978-981-32-9072-3_90

Cited by 1 publication

(2 citation statements)

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“…The material constants for AA6061-T6 are D1 = −0.77, D2 = 1.45, D3 = −0.47, D4 = 0, and D5 = 1.60. 11 Boundary conditions involved constraining one end of specimen gripping section with all degrees of freedom and allowing another end to move only in the X-direction (refer to Figure 23a and b). A mesh convergence study is undertaken to obtain a good balance of analysis run time and minimum error in tensile strength prediction.…”

Section: Experimental and Fe Analysis Of Tensile Testmentioning

confidence: 99%

“…Primarily the inner tank was manufactured with AA6061-T6 and endorsing its future applications in space programs. 9 Pramod et al 10,11 carried out finite-element (FE) analysis to investigate the pressure vessel behavior during pressurization and depressurization cycles. The study incorporated a two-dimensional (2D) axisymmetric non-linear static analysis and threedimensional (3D) shell models for dynamic response focusing on both AA6061-T6 liner and composite overwrap.…”

Section: Introductionmentioning

confidence: 99%

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Design and development of aluminum alloy 6061-T6 pressure vessel liner for aerospace applications: A technical brief

Pramod

Shanmugam

Krishnadasan

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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This work mainly focuses on designing a novel aluminum alloy 6061-T6 pressure vessel liner intended for use in launch vehicles. Fabrication of custom-made welding fixtures for the assembly of liner parts, namely two hemispherical domes and end boss, is illustrated. The parts of the liner are joined using the cold metal transfer welding process, and the welding trials are performed to arrive at an optimized parametric range. The metallurgical characterization of weld joint reveals the existence of dendritic structures (equiaxed and columnar). Microhardness of base and weld metal was 70 and 65 HV, respectively. The tensile strength of base and weld metal was 290 and 197 MPa, respectively, yielding a joint efficiency of 68%. Finite-element analysis of a uniaxial tensile test was performed to predict the tensile strength and location of the fracture in base and weld metal. The experimental and predicted tensile test results were found to be in good agreement.

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Section: Experimental and Fe Analysis Of Tensile Testmentioning

confidence: 99%