Coherent Theory Publications

Overview Annexes A to F Exact theory is always coupled to other exact theory and according to the main connection by limit analysis, the appended publications denoted by A to F are part of a future compilation in this respect. By the files called: “Overview and extensions of ……..”, the contents of the appended files and the latest developments are discussed   A. Failure criterion of wood

  • Overview and extensions of annexes A: Failure criterion of wood [download]
  • A(1982) A general failure criterion for wood [download]
  • A(1993) Discussion and proposal of a general failure criterion of wood [download]
  • A(2005) Tensorpolynomial failure criterion for wood [download]
  • A(2009) A continuum failure criterion applicable to wood [download]
  •  Exact failure criterion for wood, Theory extension and synthesis of all series A publications [download] NEW

B. Creep, damage and transformations

  • Overview and extension annexes B: Wood: Creep, damage processes, transformations [download]
  • B(1989a) deformation and damage processes in wood [download]
  • B(1989b) Theoretical explanation of the mechano-sorptive effect in wood [download]
  • B(2005) Transformations of wood and wood-like polymers [download]
  • B(2010) Theoretical derivation of the WLF and annealing equations [download]
  • B(2011) A new theory of nucleation [download]
  • Section B.1. Deformation and damage processes in wood, Theory extension and synthesis [download] NEW
  • Section B.2, B.3, B.4, Transformations of wood, Theory extension and synthesis [download] NEW

C. Fracture Mechanics

  • Overview and extension of Annexes C, fracture mechanics [download]
  • C(1990 ) Tension perpendicular to the grain at notches and joints [download]
  • C(2000) Evaluation of perpendicular to grain failure of beams caused by concentrated loads of joints [download]
  • C(2007a) Softening behavior and correction of the fracture energy [download]
  • C(2007b) A new fracture mechanics theory for orthotropic material like wood [download]
  • C(2011a) A new fracture mechanics theory of wood [download]
  • C(2011b) Fracture mechanics of wood and wood-like reinforced polymers [download]
  • C(2012) Discussion of mode II paper of Eng. Frac. Mech. 75 (2008) 4727.. [download]
  • C(2013) Comment on Mode II critical stress intensity in Holzforschung, 66, pp 989. [download]
  • C(2014a) Exact derivaion of the small-crack geometric correction factor [download]
  • C(2014b) Comment on CIB-W18_46_7_6 of B. Franke 3 [download]
  • Exact fracture mechanics theory of wood, based on micro crack extension, proving the non-existence of mechanical softening behavior [download]
  • Rejection and correction of the imposed fracture mechanics singularity approach with its associated tree modes of crack separation [download] NEW
  • A New Fracture Mechanics Theory of wood Extended Second Edition [download] NEW

D. Structural failure criteria of wood structures

  • Overview and extension of Annexes D, Structural failure criteria of timber structures [download
  • D(1991) Discussion of the faillure criterion for combined bending and compression [download]
  • D(2006a) Derivation of the shear strength of continuous beams [download]
  • D(2006b) Derivation of the bearing strength perpendicular to the grain [download] 
  • D(2008) Bestimmung der Querdruckfestigkeit von Holz [download]
  • D(2008a) Derivation of the bearing strength perpendicular to the grain of locally loaded timber blocks [download] 
  • D(2008b) Explanation of the embedding strength of particle board [download] 
  • D(2010) Failure criterion for beams loaded in bending, compression and shear [download] 
  • D(2011) Derivation of the shear strength of continuous beams 1 [download]  
  • D(2012a) Restoration of exact design for partial compression perpendicular to grain [download] 
  • D(2012b) Derivation of the bi-axial bending compression and shear strength of beams [download]

E. Stability

  • Overview and extension of Annexes E: Stability [download
  • E(1990) CIB stability design proposal [download]
  • E(2008a) discussion in Heron on Raven thesis [download] 
  • E(2008b) Critics on the thesis and Heron article of Raven et al [download]
  • E(2013) Exact Stability Calculation for Timber Beams and Columns [download] 

F. Nailed wood products to wood joints,

  • Overview and extension of Annexes F, Nailed particle board to wood joints [download]
  • F(2008) Explanation of the embedding strength of particle board [download]
  • F(2012a,b)  a. Explanation of the Strength of Nailed Particle Board-to-Wood Joints; b. Estimation of the Influence of Rows of Nails in Particle Board-to-wood joints. [download]