Shear Strength Characteristics and Shear Creep Modeling of Low Density Rigid Polyurethane Foam

  • Pentti Mäkeläinen
  • Olavi Holmijoki


The use of rigid polyurethane plastics foam as core material in structural sandwich construction has become increasingly important in recent years. Especially light-weight sandwich panels consisting of a low density rigid foam core bonded between thin steel sheet faces have found wide application in many fields of building construction. For an efficient use of rigid polyurethane foam material in sandwich construction, it is essential to know its mechanical properties in full, particularly as regards the shear properties.


Polyurethane Foam Sandwich Beam Creep Model Foam Core Secant Modulus 
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  1. 1.
    O. Holmijoki, “Shear strength and shear creep properties of rigid polyurethane foam evaluated by sandwich beam tests”, Diploma Thesis, Helsinki University of Technology, Espoo (1983).Google Scholar
  2. 2.
    P. Makelainen , “An extended reduced-time method for the modelling of long-term viscoelastic behaviour of polymeric materials”, Staveb. Cas. 28(1980)2.Google Scholar
  3. 3.
    P. Makelainen, “On the modelling of long-term thermoviscoelastic behaviour of glassy polymers”, Research Papers 56, Helsinki University of Technology, Espoo (1976).Google Scholar
  4. 4.
    N. G. McCrum and E. L. Morris ,. Proc. R. Soc. A281(1964).Google Scholar
  5. 5.
    A. Kazmierczak, “Aus Dehnungsverhalten von PUR-Schaum”, Staatsarbeit, Mitteilungen Nr. 5, IKV an der RWTH Aachen (1977).Google Scholar
  6. 6.
    J. A. Hartsock and K. P. Chong , “Analysis of sandwich panels with formed faces”, J. of the Str. Div. Proc. ASCE, Vol. 102, No. ST4(1976).Google Scholar

Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • Pentti Mäkeläinen
    • 1
  • Olavi Holmijoki
    • 1
  1. 1.Department of Civil EngineeringHelsinki University of TechnologyFinland

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