(SR52) StressStrain Relation paperboard in edgewise compression

12282019, 01:04 PM
(This post was last modified: 12282019 01:06 PM by SlideRule.)
Post: #1




(SR52) StressStrain Relation paperboard in edgewise compression
An excerpt from Method analyzes analogue plots of paperboard stressstrain data, USDA Forest Service, Forest Products Laboratory, Tappi/April 1982, Vol. 65, No. 4, pgs. 104108 & 131133
ABSTRACT One of the most important properties of paperboard is characterized by the analogue plot of stress vs. strain obtained from an edgewise compression loading test. A method is given for determining the average stressstrain curve for a group of curves by the use of representative models. An approximate method also allows data to be read from a stressstrain curve so the analysis can be performed with a hand calculator. … … A method for analyzing continuous trace data (curves) is presented in this paper. To do this the curve is reduced to a twoparameter model. Individual fits between the model and each trace are characterized by the parameter estimates obtained from a regression analysis. Ultimately it is possible to obtain a single pair of parameter estimates representative of all the traces. The accuracy of the results is represented by a confidence region surrounding the estimates. … … The procedure given in this paper uses a computer or a hand calculator and is more objective. Moreover, a specific stressstrain curve is given that works very well in a computer program for calculating the edgewise compressive strength of corrugated fiberboard … … THE CALCULATOR CORNER Stressstrain relation for paperboard in edgewise compression Program for SR52 calculator This program is useful to papermakers for analyzing the edgewise compressive behavior of paperboard. It determines the coefficients to a formula that characterizes the stressstrain relation of paperboard tested in edgewise compression. The Forest Products Laboratory uses the results of this program to calculate the theoretical effects of different paperboards on corrugated box toptobottom compressive strength. BEST! SlideRule 

« Next Oldest  Next Newest »

User(s) browsing this thread: 1 Guest(s)