Abstract
High-density pressboard samples are compressed to a constant dimension in a steel rig, and then subjected to thermal cycling. Clamping pressure and temperature are measured over several days. Temperature measurements are used as input for a simple numerical spring model to recreate the elastic behavior of the pressboard. The experimental results show that samples deform much less when pre-compressed (sized). The spring model shows great promise to further understand the long-term mechanical behavior of pressboard.