Tahoe Code SVN development benchmark

adding triaxial simulation with Fossum model

This example provides contrast with the with_cses directory. If cohesive surface elements are not present, contact works just fine.

This benchmark highlights issue with cohesive surface elements and contact. Contact is not enforced on the interior of boundaries if cohesive surface elements are present.

updated benchmarks for NLV and QLV Nfiber models

rm outdated benchmarks

updated matlab plotting

added axisymmetric soil geomodel under impulse load

latest changes; kappa0=-190; converges as far as can under force control, then switch to
displacement control for restart and it works

new files added with smaller confining stress, files with *small* in name

runs for triaxial compression, with kappa0=-500

attempting to simulate triaxial compression with smokejumper soil parameters, keeping away
from cap-shear surface transition; get Floating exception error when simulating