Interesting behavior patterns of poroelastic beams and columns

Unusual patterns in the time dependent behavior of the pore pressure in poroelastic solids "the Mandel Cryer e}ect# were predicted and then observed over 14 years ago[ Recently we formulated the problem of poroelastic beams dominated by axial di}usion\ and results were found for several cases[ It was observed that response peculiarities similar to those previously observed in massive structures are possible also for this case[ We now show that not only are such unexpected results possible also for the de~ection and slope\ but that the time dependent patterns of all these variables may even be more complicated than in the case of the Mandel Cryer e}ect[ These interesting behavior patterns are qualitatively unobtainable with structures whose time dependent behavior results from modeling material behavior as viscoelastic[ In this paper we present various behaviors of unusual nature exhibited by poroelastic beams and columns with axial di}usion[ 0887 Elsevier Science Ltd[ All rights reserved