单板条层积材力学模型的验证与分析  

Verification and analysis of parallel strand lumber mechanical model

作　　者：王石建[1] 宋明鑫[1] 那斌[1] 高婧[1] 王志强[1] 卢晓宁[1] 

机构地区：[1]南京林业大学木材工业学院,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2012年第4期123-126,共4页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家林业公益性科研专项项目(201104042);江苏省科技攻关项目(201104042);江苏省苏北科技发展计划(BC2011413);江苏省科技型企业技术创新资金项目(BC2010419)

摘　　要：在利用弹性力学能量原理建立的单板条层积材力学模型基础上,应用层合板理论计算单板条层积材的宏观弹性常数。通过在单板条上黏贴应变片的方法测定杨木单板条的各项弹性常数,并得出了单板条弹性常数与单板条对应密度的关系方程。在此基础上,通过压制不同铺装角度和不同组坯结构的单板条层积材来对计算结果进行验证,验证结果表明,以能量原理为基础,采用层合板理论来预测单板条层积材的力学模型精度较高。According to the elasticity energy principle, the strength model of parallel strand lumber was built. Then macroscopic elastic constant of PSL（ parallel strand lumber） can be calculated on the basis of this model and theory of laminated plate. The veneer strip with affixed strain gauge were tested to got the elastic constant of veneer which was the basic data for the model. To test and verify the prediction, the experiment of different matting angle and different assem- bly construct has been carried out. It was seen that the mechanical model of PSL was established by the laminated plate theory could achieve a high precision of the prediction range.

关 键 词：单板条层积材 弹性力学能量原理 层合板理论 宏观弹性常数 应变片 

分 类 号：TS612.1[轻工技术与工程]