Based　on　the　primary　features　and　existing　experimental　results　of　concrete,　the　dynamic　strength　and　elastic　modulus　related　to　strain　rate,　as　well　as　a　bilinear　damage　evolution　model　linked　to　strain　are　formulated.　The　static　and　dynamic　nonlinear　equations　on　the　principle　of　virtual　work　for　concrete　specimens　are　set　up　as　well.　The　codes　for　the　equations　and　the　proposed　iteration　algorithm　according　to　the　grammar　rules　of　the　Finite　Element　Program　Generator　(FEPG),　and　the　parallel　computation　program　are　finally　developed　on　the　platform　of　the　Parallel　Finite　Element　Program　Generator　(PFEPG)　system.　Three　dimension　random　aggregate　and　random　mechanics　parameter　model　(RAPM)　are　applied　to　numerically　simulate　the　fracture　processes　of　rupture　test　of　dam　concrete　specimens.　The　presented　algorithm　and　parallel　computing　program　are　verified　by　the　comparison　between　analytical　and　experimental　results.