简支 + 均布:q=10 N/mm, L=4000 mm, E=210000, I=8.36×10⁷ mm⁴ δ = 5·q·L⁴/(384·E·I) ≈ 1.8987 mm @ 跨中。{"result":"Simply supported beam + UDL, q=10 N/mm, L=4000 mm, E=210000 MPa, I=83600000 mm⁴. δ_max = 5·q·L⁴/(384·E·I) = 1.8987 mm at mid-span.","metadata":{"input":{"supportCase":"simplySupportedUDL","q":10,"L":4000,"E":210000,"I":83600000},"result":{"supportCase":"simplySupportedUDL","load":"q","deflection":1.8987,"deflectionUnit":"mm","formula":"δ = 5·q·L⁴ / (384·E·I)","location":"mid-span"}}}
悬臂 + 端部集中:P=5000 N, L=2000 mm, E=210000, I=8.36×10⁷ mm⁴ δ = P·L³/(3·E·I) ≈ 0.7595 mm @ 自由端。{"result":"Cantilever beam + end point load, P=5000 N, L=2000 mm, E=210000 MPa, I=83600000 mm⁴. δ_max = P·L³/(3·E·I) = 0.7595 mm at the free end.","metadata":{"input":{"supportCase":"cantileverPoint","P":5000,"L":2000,"E":210000,"I":83600000},"result":{"supportCase":"cantileverPoint","load":"P","deflection":0.7595,"deflectionUnit":"mm","formula":"δ = P·L³ / (3·E·I)","location":"free end"}}}