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Advanced Simulation of Gas Meter Components

Advanced Simulation of Gas Meter Components. Muhammad Arsalan Farooq University of Heidelberg, Heidelberg, Germany. Overview. Introduction Structural Analysis Pre processing Solution Post Processing Alternate Solutions Comparison Conclusion. Introduction. Industrial Use.

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Advanced Simulation of Gas Meter Components

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  1. Advanced Simulation of Gas Meter Components Muhammad Arsalan Farooq University of Heidelberg, Heidelberg, Germany.

  2. Overview • Introduction • Structural Analysis • Pre processing • Solution • Post Processing • Alternate Solutions • Comparison • Conclusion

  3. Introduction Industrial Use Commercial Use Measuring unit Upper Case and Lower Case Lower Case Part of Measuring Unit

  4. Pre Processing • Meshing • Triangular Elements • More flexible than quadrilateral elements • Element Type Selection • Solid92 • Additional nodes at the mid point of each edge. • Advantage in the use of higher order approximations. Howard C. Elman, David J. Silvester and Andrew J. Wathen, Finite Elements and Fast Iterative Solvers, Oxford University Press, 2005

  5. Pre Processing • Defining Material Properties: • Tensile Modulus (Elastic Modulus) = 28,900 Kg/cm2 = 2832.2 N/mm2 • Poisson’s Ratio = 0.35

  6. Pre Processing • Applying Boudary Conditions • Constraints • Resist the deformations induced by the loads • Impact Pressure • Load is applied on two extrusions of the shell. • Impact Pressure of 15.6 N/mm2 was applied

  7. Solution • Solution is a batch process. • The governing equations are assembled in the matrix and solved numerically. • The assembly process depends on the model‘s element type, boundary condition and material properties. Model after the Application of Loads and Constraint

  8. Post Processing • Displacement Edges experiencing no deformation (Highlighted by arrows) Sections under maximum Deformation

  9. Post Processing • Stresses The maximum stresses are generated at the tip and the bottom of the extruded part as indicated by arrows. Stresses are concentrating in the area below the extruded part to the upper corner of the part Stress generated on the Back side of the Shell

  10. Post Processing • Strain Strain pattern on the front side of the Shell after the application of force Straining on the Back side of Shell

  11. Alternate Solutions • Increasing the width of Extrusion • Range of Stresses 41.712 N/mm2 – 50.055 N/mm2 Fracture occur at 45.93 N/mm2 • Attaching Ribs on the corner of the Extrusion: • Ranges of Stresses 18.011N/mm2 – 27.017 N/mm2

  12. Comparison

  13. Conclusion • 50 fractured measuring units were randomly selected. • Extruded area and the area near it was damaged. • The accuracy of computer simulation greatly depends on the quality of the input parameters. • One measuring unit costs around €12. • Average of 25 measuring Units fractued every month.

  14. Acknowledgement • Proff. Dr. Nazimuddin Qureshi • Dr. Michael Winckler • Ali Zulqarnain • Iqbal Aleemi • Sohaib Tariq • Faizan Mirza • Amir Naveed

  15. Thank you for your attention Questions/Answers m_arsalanfarooq@yahoo.com 0049 (0)17637502933

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