| { |
| "problem_id": "auto_problem_096", |
| "description": "Truss optimization problem (ground structure variant 96)", |
| "topology": { |
| "joints": [ |
| { |
| "id": 0, |
| "position": [ |
| 0.0, |
| 0.0, |
| 0.0 |
| ], |
| "support": "pinned" |
| }, |
| { |
| "id": 1, |
| "position": [ |
| 1.968156868615081, |
| 0.0, |
| 0.0 |
| ], |
| "support": null |
| }, |
| { |
| "id": 2, |
| "position": [ |
| 3.936313737230162, |
| 0.0, |
| 0.0 |
| ], |
| "support": null |
| }, |
| { |
| "id": 3, |
| "position": [ |
| 5.904470605845243, |
| 0.0, |
| 0.0 |
| ], |
| "support": null |
| }, |
| { |
| "id": 4, |
| "position": [ |
| 7.872627474460324, |
| 0.0, |
| 0.0 |
| ], |
| "support": "roller_y" |
| }, |
| { |
| "id": 5, |
| "position": [ |
| 0.0, |
| 2.7424472918040594, |
| 0.0 |
| ], |
| "support": null |
| }, |
| { |
| "id": 6, |
| "position": [ |
| 1.968156868615081, |
| 2.7424472918040594, |
| 0.0 |
| ], |
| "support": null |
| }, |
| { |
| "id": 7, |
| "position": [ |
| 3.936313737230162, |
| 2.7424472918040594, |
| 0.0 |
| ], |
| "support": null |
| }, |
| { |
| "id": 8, |
| "position": [ |
| 5.904470605845243, |
| 2.7424472918040594, |
| 0.0 |
| ], |
| "support": null |
| }, |
| { |
| "id": 9, |
| "position": [ |
| 7.872627474460324, |
| 2.7424472918040594, |
| 0.0 |
| ], |
| "support": null |
| } |
| ], |
| "members": [ |
| { |
| "joints": [ |
| 0, |
| 1 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.02373694263401383, |
| "t": 0.003956157105668973 |
| } |
| }, |
| { |
| "joints": [ |
| 1, |
| 2 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.026398322155606592, |
| "t": 0.004399720359267767 |
| } |
| }, |
| { |
| "joints": [ |
| 2, |
| 3 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.02473071022850805, |
| "t": 0.0041217850380846745 |
| } |
| }, |
| { |
| "joints": [ |
| 3, |
| 4 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.019377150165337937, |
| "t": 0.0032295250275563227 |
| } |
| }, |
| { |
| "joints": [ |
| 5, |
| 6 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.01836791933883027, |
| "t": 0.0030613198898050455 |
| } |
| }, |
| { |
| "joints": [ |
| 7, |
| 8 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.024131927185254462, |
| "t": 0.004021987864209077 |
| } |
| }, |
| { |
| "joints": [ |
| 8, |
| 9 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.017834635424542063, |
| "t": 0.002972439237423677 |
| } |
| }, |
| { |
| "joints": [ |
| 0, |
| 5 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.02353444330641545, |
| "t": 0.003922407217735909 |
| } |
| }, |
| { |
| "joints": [ |
| 1, |
| 6 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.019475559676465283, |
| "t": 0.003245926612744214 |
| } |
| }, |
| { |
| "joints": [ |
| 2, |
| 7 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.021967382293779446, |
| "t": 0.0036612303822965743 |
| } |
| }, |
| { |
| "joints": [ |
| 3, |
| 8 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.01792853955697777, |
| "t": 0.002988089926162962 |
| } |
| }, |
| { |
| "joints": [ |
| 4, |
| 9 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.022850613130408582, |
| "t": 0.003808435521734764 |
| } |
| }, |
| { |
| "joints": [ |
| 0, |
| 6 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.03544042448062583, |
| "t": 0.00590673741343764 |
| } |
| }, |
| { |
| "joints": [ |
| 1, |
| 5 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.027393804340993453, |
| "t": 0.004565634056832243 |
| } |
| }, |
| { |
| "joints": [ |
| 1, |
| 7 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.023249325461741015, |
| "t": 0.00291583910748257 |
| } |
| }, |
| { |
| "joints": [ |
| 2, |
| 8 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.02663226504156091, |
| "t": 0.0044387108402601525 |
| } |
| }, |
| { |
| "joints": [ |
| 3, |
| 7 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.02870164686626912, |
| "t": 0.004783607811044855 |
| } |
| }, |
| { |
| "joints": [ |
| 3, |
| 9 |
| ], |
| "material": "A36_Steel", |
| "shape": { |
| "type": "Pipe", |
| "r": 0.026594565289692815, |
| "t": 0.004432427548282136 |
| } |
| } |
| ] |
| }, |
| "loading": [ |
| { |
| "joint": 6, |
| "force": [ |
| 0.0, |
| -68966.6757472808, |
| 0.0 |
| ] |
| }, |
| { |
| "joint": 7, |
| "force": [ |
| 0.0, |
| -50136.523656916965, |
| 0.0 |
| ] |
| } |
| ], |
| "goals": { |
| "minimum_fos_buckling": 1.5, |
| "minimum_fos_yielding": 1.5, |
| "maximum_mass": 283.2833016161414 |
| }, |
| "optimization": { |
| "shape": "Pipe", |
| "shape_params": { |
| "r": { |
| "min": 0.005, |
| "max": 0.15, |
| "initial": 0.03 |
| }, |
| "t": { |
| "min": 0.001, |
| "max": 0.02, |
| "initial": 0.005 |
| } |
| } |
| }, |
| "_metadata": { |
| "optimal_mass": 257.53027419649214, |
| "generation_method": "ground_structure_lp", |
| "degradation_steps": 4 |
| } |
| } |
