Advances in the knowledge of the influence of moisture changes on the long-term mechanical performance of timber structures

Materials and Structures/Materiaux et Constructions

Volumn 33, Issue 1, 2000, Pages 43-49

  Hanhijarvi A ^a  

^a VTT TECHNICAL RESEARCH CENTRE OF FINLAND   (Finland)

Author keywords

[No Author keywords available]

Indexed keywords

ATMOSPHERIC HUMIDITY; CREEP; MATHEMATICAL MODELS; MOISTURE; STRAIN; STRENGTH OF MATERIALS; STRESS ANALYSIS; STRUCTURAL ANALYSIS; WOOD PRODUCTS;

TIMBER;

WOODEN CONSTRUCTION;

EID: 18744419942     PISSN: 13595997     EISSN: None     Source Type: Journal    
DOI: 10.1007/bf02481695     Document Type: Article

References (35)

1. Hanhijärvi, A., 'Modelling of creep deformation mechanisms in wood', (Technical Research Centre of Finland, Espoo, FI, VTT Publications 231, 1995).
2. Ranta-Maunus, A., 'A theory for the creep of wood with application to birch and spruce plywood', (Technical Research Centre of Finland, Building Technology and Community Development, Helsinki, Publication 4, 1973) ISBN 951-38-0013-X.
3. Ranta-Maunus, A., 'The viscoelasticity of wood at varying moisture content', Wood Science and Technology 9 (1975) 189-205.
4. Leicester, R. H., 'A rheological model for mechano-sorptive deflections of beams' Ibid. 5 (1971) 211-220.
5. Hunt, D. G., 'Linearity and non-linearity in mechano-sorptive creep in softwood in compression and bending', Ibid. 23 (1989) 323-333.
6. Toratti, T., 'Creep of timber beams in a variable environment' (Helsinki University of Technology, Lab. of Structural Engineering and Building Physics, Espoo, Report 31, 1992).
7. Salin, J.-G., 'Numerical prediction of checking during timber drying and a new mechano-sorptive creep model', Holz als Roh-und Werkstoff 50 (1992) 195-200.
8. Yahiaoui, K., 'A rheological model to account for mechano-sorptive behaviour', in Martensson, A., Ranta-Maunus, A. and Seoane I. (eds.), Presentations at the COST 508 Wood mechanics Workshop on Fundamental aspects of creep in wood, Lund, Sweden, 20-21 March 1991 (Commission of the European Communities) 27-35.
9. Hanhijärvi, A., Hunt, D., 'Experimental indication of interaction between viscoelastic and mechano-sorptive creep', Wood Science and Technology 32, (1998) 57-70.
10. Hanhijärvi, A., 'Deformation kinetics based rheological model for the time-dependent and moisture induced deformation of wood' Ibid. 29 (1995) 191-199.
11. Hunt, D., Gril, J., 'Evidence of physical ageing phenomenon in wood', Journal of Materials Science Letters 15 (1996) 80-82.
12. Bazant, Z. P., 'Constitutive equation of wood at variable humidity and temperature', Wood Science and Technology 19 (1985) 159-177.
13. Ranta-Maunus, A. and Kortesmaa, M., 'An analysis of the state of stress in timber caused by moisture gradient' in Proc. of IUFRO Timber Engineering Meeting, Turku FI, 1988, 113-116.
14. Hanhijärvi, A. and Ranta-Maunus, A., 'A three-dimensional analysis of wooden beams in bending under changing humidity conditions' in Proc. IUFRO/S5.02 Timber engineering meeting, RILEM TC 110-TFM & IUFRO 5.02 Joint Session., Saint John, New Brunswick, July 27 - August 3, 1990, 514-525.
15. Mårtensson, A., 'Effect of moisture and mechanical loading on wood and wooden materials' ibid. 526-543.
16. Toratti, T., 'A cross section creep analysis', ibid. 544-557.
17. Mårtensson, A., 'Mechanical behaviour of wood exposed to humidity variations' (Lund Institute of Technology, Dept. of Structural Eng., Lund, Sweden, Report TVBK-1006, 1992).
18. Ranta-Maunus, A. and Gowda, S. 'Curved and cambered glulam beams. Part 2. Long term load tests under cyclically varying humidity', (VTT, Technical Research Centre of Finland, Espoo, VTT Publications 171, 1994).
19. Hanhijärvi, A., 'Computational method for predicting the long-term performance of timber beams in variable climates' to appear in Mater. Struct.
20. Hanhijärvi, A., 'Development of a computational method for analysis of the strength reduction of LVL-beams due to long-term loading and variable climate' in Proc. COST E8 International Conference on Wood-Water Relations, Copenhagen, DK, 16-17 June 1997 (Technical Univ. of Denmark, Dept. of Struct. Eng. and Materials).
21. Morlier, P. and Ranta-Maunus, A., 'DOL effect of different sized timber beams', Holz als Roh-und Werkstoff 56 (1998) 279-284.
22. Hanhijärvi A., Galimard, P. and Hoffmeyer, P., 'Duration of load behaviour of different sized straight timber beams subjected to bending in variable climate', Ibid. 56 (5) (1998) 285-293
23. Hukka, A. 'A simulation program for optimisation of medium temperature drying on an industrial scale', Proc. 5th International IUFRO Wood Drying Conf., Quebec City, Canada, August 13-17, 1996.
24. Svensson, S. and Mårtensson, A., 'Simulation of drying stresses in wood. II: Convective air drying of sawn timber', to appear in Holz als Roh-und Werkstoff.
25. Hanhijärvi, A., 'Deformation properties of Finnish spruce and pine wood in tangential and radial directions in association to high temperature drying. Part IV. Modelling', to appear in Holz als Roh-und Werkstoff.
26. Hanhijärvi, A., 'Deformation properties of Finnish spruce and pine wood in tangential and radial directions in association to high temperature drying. Part I. Experimental techniques for conditions simulating the drying process and results on shrinkage, hydrothermal deformation, modulus of elasticity and strength', Holz als Roh-und Werkstoff 56 (1998) 373-380.
27. Hanhijärvi, A., 'Deformation properties of Finnish spruce and pine wood in tangential and radial directions in association to high temperature drying. Part II. Experimental results under constant conditions (viscoelastic creep)', ibid. 57 (1999) 365-372.
28. Hanhijärvi, A., 'Deformation properties of Finnish spruce and pine wood in tangential and radial directions in association to high temperature drying. Part III. Experimental results under drying conditions (mechano-sorptive creep)', to appear in Holz als Roh-und Werkstoff.
29. Hanhijärvi, A. and Ranta-Maunus, A., 'Computational analysis of the effect of transverse anisotropy and annual ring pattern in cross-sections of curved glulam beams on the size effect of strength', European Workshop on Application of Statistics and Probabilities in Wood Mechanics. Bordeaux, Feb. 22-23, 1996 (In press).
30. Ranta-Maunus, A., 'The influence of changing state of stress caused by mechano-sorptive creep on the duration of load effect', Proc. International COST 508 Wood Mechanics Conf., Stuttgart, May 14-16, 1996 (FMPA-Otto-Graf-Institut, Univ. of Stuttgart, 1996) 187-201.
31. Gustafsson P.J., Hoffmeyer, P. and Valentin, G., 'DOL effect on end-notched-beams', Holz als Roh-und Werkstoff 56 (1998) 307-317.
32. Ranta-Maunus, A., 'Impact of mechano-sorptive creep to the long-term strength of timber', Ibid. 48 (1990) 67-71.
33. Santaoja, K., Leino, T., Ranta-Maunus, A. and Hanhijärvi, A., 1991. 'Mechano-sorptive structural analysis of wood by the ABAQUS finite element program', (VTT, Technical Research Centre of Finland, Espoo, FI, VTT Research Notes 1276, 1991), ISBN 951-38-4009-3.
34. Hunt, D. G. and Shelton, C. F., 'Longitudinal moisture-shrinkage coefficients of softwood at the mechano-sorptive creep limit', Wood Science and Technology 22 (1988) 199-210.
35. Mårtensson, A. and Svensson, S., 'Stress-strain relationship of drying wood. Part 1: Development of a constitutive model', Holzforschung 51 (1997) 472-478.