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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 6 Material properties for estimation curve

From: Estimation of failure lifetime in plywood-to-timber joints with nails and screws under cyclic loading

Specimen

d1 (mm)

d2 (mm)

l (mm)

Ft (N/mm2)

ρ1 (kg/m3)

ρ2 (kg/m3)

t 2 (mm)

k 1 (N/mm3)

k2 (N/mm3)

Fe1 (N/mm2)

Fe2 (N/mm2)

Ppull (N/mm)

Phead-ini (kN)

Phead (kN)

4.1 × 38 mm

3.25

4.1

38

822

407.1

536.3

9

104.5

149.3

32.3

42.2

94.4

1.66

1.79

4.5 × 50 mm

3.52

4.5

50

825

100.0

142.9

32.2

42.0

100.4

1.82

1.96

CN50

2.87

2.87

50

594

111.3

159.0

32.4

42.7

20.1

1.16

1.25

  1. d is the effective diameter, subscript numbers 1 and 2 represent the number of the member (1: main member, 2: side member), l is the length of the fastener, Ft is the tensile strength of the fastener, ρ is the member density, t is the member thickness, k is the embedment stiffness, Fe is the embedment strength, Ppull is the pull-out resistance in the main member, Phead-ini is the initial axial force exerted by the side member on the fastener, and Phead is the penetration resistance of the side member
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