ISSN:
1432-5225
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Summary The study of intermittent loading of wood described in an earlier publication was extended to explore the effects of shorter cycles. For stresses below about 50 per cent of the modulus of rupture the principle of superposition provides a fair indication of expected deflections when the environmental conditions are constant. It is shown how, under this principle, the peak strains are limited to fractions of the creep strain at constant load, the excess after the first peak being dependent on the proportion of time under load in a cycle. Consequently, when the intervals between loads are considerably longer than the duration of loads, cumulative effects are negligible.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00380202
Permalink
