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Input parameters (E1, E2, G, n)

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Presentation on theme: "Input parameters (E1, E2, G, n)"— Presentation transcript:

1 Input parameters (E1, E2, G, n)
PamForm simulations Uniaxial Tensile Test Simulations (with ESI PamForm)  sensitivity study to calibrate the material input parameters (E1, E2, G, n), looking forward to the results of experimental tests v v Simulation list Input parameters (E1, E2, G, n) Output Force (final value) Parametric curves

2 PamForm (1/3) Material characterization
TEST STANDARD and Output NOTES: INFO FROM PARTNERS PARTNER IINVOLVED Ply Density measure - We can carry out the test ??? Ply Thickness measure Tensile test Standard: ASTM D412 Output: fibre moduli Young moduli in 1- and 2-direction, measured on the complete composite structure at the process temperature This test is equated to ISO 37 which is for vulcanized rubber and elastomeric thermoplastic. We propose to continue with our proposed normative ISO 527 UGHENT Compression test Standard: ASTM D575 Young moduli in 1- and 2-direction, measured on the complete composite structure at the process temperature. It is not mandatory: it gives additional information for a better simulation This test is designed for rubber UORL UGHENT

3 Picture frame or Biaxial tensile tests
PamForm (2/3) Material characterization TEST STANDARD and Output NOTES: INFO FROM PARTNERS PARTNER IINVOLVED Picture frame or Biaxial tensile tests Non standard Test: at 190, 205, 220 °C and 50, 300, 1000 mm/min Output: intra ply viscosity, in-plane shear modulus, a lock Non Standard test: pay attention to the fabric alignement. Shear modulus, locking angle, post locking shear modulus (G, alock, Glock) have to be measured on the complete composite structure with the following conditions: Pre-forming condition: If you polymerize your material before forming, then you have to characterize it polymerized; if not, characterize the material non polymerized Process temperature: test carried out at T ~100°C instead of process temperature is OK if you think that material behavior between 100°C and process temp is not drastically different. But, is it really the case? We can carry them out under ISO 527 at 50 and 100 mm/min. Temperatures we can work at temperatures up to 100°C. STILL NOT ASSIGNED?

4 TEST STANDARD and Output NOTES: INFO FROM PARTNERS PARTNER IINVOLVED
PamForm (3/3) Material characterization TEST STANDARD and Output NOTES: INFO FROM PARTNERS PARTNER IINVOLVED Self-weight bend test Standard: ASTM 1388 Output: bending stiffness Measured on the complete composite structure at the process temperature We can equate this to ISO 178 which is the one we proposed STILL NOT ASSIGNED? Pull-out Test Test at 180, 200, 220 °C and 0.5, 0.8, 1.2 mm/s (normal pressure between 80kPa and 2.5 MPa) Output: ply/tool friction We cannot carry out this test Data from ESI and parametric study Viscosity test Output: power law or cross equation Measured at the process temperature ESI recommends to use the different picture frame tests (different temp. + different shear rate) compared with simulation results to calibrate viscosity. Viscosimeter will not give a correct value. Please note that a constant value for viscosity is also possible. ESI could provide a typical value for optimization start point if needed. We can measure viscosity by Ubbeholde viscosimeter, and ashes measurement UORL – please confirm? Test Method for Thermal Conductivity ply/tool heat transfer coefficients Measured at the process temperature. We would perform an isothermal simulation: ESI says it would be sufficient. In this case, thermal conductivity is not needed. We can carry out this test, although it requires more time to do so. ???


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