CRITICAL LOCAL BUCKLING STRESS OF POLTRUDED CHANNEL SECTIONS
Abstract
Introduction. The construction industry applies the use of pultruded FRP sections extensively. Various features such as resistance to corrosion and high strength to weight ratio make the pultruded FRP sections the most preferable for construction. The direct strength method is used mainly in estimating the buckling load of the pultruded sections.
Methodology. Finite Strip Analysis gives the most generally utilized way used to deal with the evaluation of the instabilities in the delicate walled part under the longitudinal load. Development of Model is used in plotting the section of geometry that ensures the coordinates of nodes used in getting the four strips—the use of CUFSM accumulated model validation of the general data. The data were used in the analysis, and the derivation of empirical equations ensures accuracy in the used data.
Results. The results of fcr from the CUFSM were compared against the results from equations that account for material orthotropy for sections in compression assessed to verify that it provides a good match with the results attained from CUFSM. For sections in major axis bending, an empirical equation is proposed for the factor kmat that was used in producing the suggested orthotropic stress data. The new data were validated against the CUFSM results.
Conclusion. The plates' exposure to external stresses or forces leads to changes in shape. The change could either be as intended or become a challenge in the construction work. The results' segment enumerates critical data relevant to the CUFSM concept.