other source: https://www.seamplex.com/feenox/tests/nafems/le10/ https://seamplex.com/feenox/examples/mechanical.html#nafems-le10-thick-plate-pressure-benchmark
other source:
https://www.seamplex.com/feenox/tests/nafems/le10/
https://seamplex.com/feenox/examples/mechanical.html#nafems-le10-thick-plate-pressure-benchmark