Modeling structural insulated panel (SIP) flexural creep deflection

Steven B. Taylor, Harvey B. Manbeck, John J. Janowiak, Dennis R. Hiltunen

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Creep testing of oriented strand board/foam structural insulated panels (SIPs) was conducted to measure the midspan creep deflections of SIP beams loaded in quarter point and to test the effects of SIP thickness, load duration, as well as core shear stress. A relative deflection relationship was generated for both the expanded polystyrene (EPS) and urethane SIPs from the faw creep deflection data that had been screened based on previously determined limits of viscoelastic linearity. A five element, four element, and three element viscoelastic model along with a power model were all used in the validation procedure to predict the three month relative creep deflection. EPS SIPs were tested at the 2/3 stress level for six months to determine the model capability in predicting relative deflections beyond the experimental time span. Both the five element and the power model were recommended for predicting the EPS and urethane SIP relative deflections for the three month load duration.

Original languageEnglish (US)
Pages (from-to)1658-1665
Number of pages8
JournalJournal of Structural Engineering
Issue number12
StatePublished - Dec 1997

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'Modeling structural insulated panel (SIP) flexural creep deflection'. Together they form a unique fingerprint.

Cite this