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    Method for Simulating Tension Performance of Lumber Members

    Source: Journal of Structural Engineering:;1990:;Volume ( 116 ):;issue: 010
    Author:
    Steven M. Cramer
    ,
    William B. Fohrell
    DOI: 10.1061/(ASCE)0733-9445(1990)116:10(2729)
    Publisher: American Society of Civil Engineers
    Abstract: A methodology is described for simulating the tension performance of lumber members. The described methodology uses detailed knowledge of individual board three‐dimensional fiber orientation in a finite element model to predict the fracture behavior that occurs in lumber. Grain‐angle data maps were obtained using previously developed nondestructive measurement techniques and small clear‐wood specimen property tests were conducted to provide model input. In addition to fracture patterns, the methodology accurately predicts the tensile strength of lumber specimens without the aid of empirical adjustment factors. The computational characteristics of the fracture‐related aspects of the model are described. Sample experimental observations are provided, showing the accuracy of the method for predicting fracture patterns, load‐displacement response, and tensile strength of lumber specimens. It is hoped that this methodology will lead to a new fundamental basis for grading lumber and determining allowable design stresses. Discussion is provided on those material characteristics, including within‐board grain‐angle and property variations that make lumber performance difficult to predict.
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      Method for Simulating Tension Performance of Lumber Members

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    contributor authorSteven M. Cramer
    contributor authorWilliam B. Fohrell
    date accessioned2017-05-08T20:53:32Z
    date available2017-05-08T20:53:32Z
    date copyrightOctober 1990
    date issued1990
    identifier other%28asce%290733-9445%281990%29116%3A10%282729%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/30715
    description abstractA methodology is described for simulating the tension performance of lumber members. The described methodology uses detailed knowledge of individual board three‐dimensional fiber orientation in a finite element model to predict the fracture behavior that occurs in lumber. Grain‐angle data maps were obtained using previously developed nondestructive measurement techniques and small clear‐wood specimen property tests were conducted to provide model input. In addition to fracture patterns, the methodology accurately predicts the tensile strength of lumber specimens without the aid of empirical adjustment factors. The computational characteristics of the fracture‐related aspects of the model are described. Sample experimental observations are provided, showing the accuracy of the method for predicting fracture patterns, load‐displacement response, and tensile strength of lumber specimens. It is hoped that this methodology will lead to a new fundamental basis for grading lumber and determining allowable design stresses. Discussion is provided on those material characteristics, including within‐board grain‐angle and property variations that make lumber performance difficult to predict.
    publisherAmerican Society of Civil Engineers
    titleMethod for Simulating Tension Performance of Lumber Members
    typeJournal Paper
    journal volume116
    journal issue10
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)0733-9445(1990)116:10(2729)
    treeJournal of Structural Engineering:;1990:;Volume ( 116 ):;issue: 010
    contenttypeFulltext
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