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Title: Unified Creep Plasticity Damage (UCPD) Model for Rigid Polyurethane Foams.

Abstract

Numerous experiments were performed to characterize the mechanical response of several different rigid polyurethane foams (FR3712, PMDI10, PMDI20, and TufFoam35) to large deformation. In these experiments, the effects of load path, loading rate, and temperature were investigated. Results from these experiments indicated that rigid polyurethane foams exhibit significant volumetric and deviatoric plasticity when they are compressed. Rigid polyurethane foams were also found to be very strain-rate and temperature dependent. These foams are also rather brittle and crack when loaded to small strains in tension or to larger strains in compression. Thus, a new Unified Creep Plasticity Damage (UCPD) model was developed and implemented into SIERRA with the name Foam Damage to describe the mechanical response of these foams to large deformation at a variety of temperatures and strain rates. This report includes a description of recent experiments and experimental findings. Next, development of a UCPD model for rigid, polyurethane foams is described. Selection of material parameters for a variety of rigid polyurethane foams is then discussed and finite element simulations with the new UCPD model are compared with experimental results to show behavior that can be captured with this model.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1183947
Report Number(s):
SAND2015-4352
590383
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Neilsen, Michael K., Lu, Wei-Yang, Scherzinger, William M., Hinnerichs, Terry D., and Lo, Chi S. Unified Creep Plasticity Damage (UCPD) Model for Rigid Polyurethane Foams.. United States: N. p., 2015. Web. doi:10.2172/1183947.
Neilsen, Michael K., Lu, Wei-Yang, Scherzinger, William M., Hinnerichs, Terry D., & Lo, Chi S. Unified Creep Plasticity Damage (UCPD) Model for Rigid Polyurethane Foams.. United States. https://doi.org/10.2172/1183947
Neilsen, Michael K., Lu, Wei-Yang, Scherzinger, William M., Hinnerichs, Terry D., and Lo, Chi S. 2015. "Unified Creep Plasticity Damage (UCPD) Model for Rigid Polyurethane Foams.". United States. https://doi.org/10.2172/1183947. https://www.osti.gov/servlets/purl/1183947.
@article{osti_1183947,
title = {Unified Creep Plasticity Damage (UCPD) Model for Rigid Polyurethane Foams.},
author = {Neilsen, Michael K. and Lu, Wei-Yang and Scherzinger, William M. and Hinnerichs, Terry D. and Lo, Chi S.},
abstractNote = {Numerous experiments were performed to characterize the mechanical response of several different rigid polyurethane foams (FR3712, PMDI10, PMDI20, and TufFoam35) to large deformation. In these experiments, the effects of load path, loading rate, and temperature were investigated. Results from these experiments indicated that rigid polyurethane foams exhibit significant volumetric and deviatoric plasticity when they are compressed. Rigid polyurethane foams were also found to be very strain-rate and temperature dependent. These foams are also rather brittle and crack when loaded to small strains in tension or to larger strains in compression. Thus, a new Unified Creep Plasticity Damage (UCPD) model was developed and implemented into SIERRA with the name Foam Damage to describe the mechanical response of these foams to large deformation at a variety of temperatures and strain rates. This report includes a description of recent experiments and experimental findings. Next, development of a UCPD model for rigid, polyurethane foams is described. Selection of material parameters for a variety of rigid polyurethane foams is then discussed and finite element simulations with the new UCPD model are compared with experimental results to show behavior that can be captured with this model.},
doi = {10.2172/1183947},
url = {https://www.osti.gov/biblio/1183947}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 2015},
month = {Mon Jun 01 00:00:00 EDT 2015}
}