TY - JOUR

T1 - Estimation of the internal shear strength distribution of the element for laminated veneer lumber by nonlinear least-squares method

AU - Koseki, Makoto

AU - Nakamura, Noboru

AU - Naoi, Shinichiro

N1 - Publisher Copyright:
© 2018, The Japan Wood Research Society.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - Until now we developed an estimation method for strength distributions of laminated veneer lumber (LVL) element by nonlinear least-squares method (NLM). Estimated strengths by this method were modulus of elasticity (MOE) and modulus of rupture (MOR) in the horizontal use direction and the vertical use direction, tensile strength and compression strength. But to use LVL for structural members, shear strength was also needed. Therefore, we tried to estimate the shear strength distribution of LVL element by NLM same as MOE and MOR in the horizontal use direction and the vertical use direction, the tensile strength of LVL and the compression strength of LVL in the previous reports. We conducted shear strength test for LVL and estimated element shear strength distribution by LVL strength data in the horizontal and vertical use direction. Next, we simulated LVL shear strength distribution using element shear strength distribution and compared with experimental ones in each use direction. They were overlapped in both use direction. Therefore, we could validate NLM for estimating element shear strength distribution.

AB - Until now we developed an estimation method for strength distributions of laminated veneer lumber (LVL) element by nonlinear least-squares method (NLM). Estimated strengths by this method were modulus of elasticity (MOE) and modulus of rupture (MOR) in the horizontal use direction and the vertical use direction, tensile strength and compression strength. But to use LVL for structural members, shear strength was also needed. Therefore, we tried to estimate the shear strength distribution of LVL element by NLM same as MOE and MOR in the horizontal use direction and the vertical use direction, the tensile strength of LVL and the compression strength of LVL in the previous reports. We conducted shear strength test for LVL and estimated element shear strength distribution by LVL strength data in the horizontal and vertical use direction. Next, we simulated LVL shear strength distribution using element shear strength distribution and compared with experimental ones in each use direction. They were overlapped in both use direction. Therefore, we could validate NLM for estimating element shear strength distribution.

KW - Element of LVL

KW - Laminated veneer lumber (LVL)

KW - Monte Carlo simulation

KW - Nonlinear least-squares method

KW - Shear strength distribution

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U2 - 10.1007/s10086-018-1729-5

DO - 10.1007/s10086-018-1729-5

M3 - Article

AN - SCOPUS:85047222499

SN - 1435-0211

VL - 64

SP - 635

EP - 641

JO - Journal of Wood Science

JF - Journal of Wood Science

IS - 5

ER -