Dị ka usoro nnyefe, a na-eji ngwa mbara ala mee ihe n'ọtụtụ ọrụ injinịa dị iche iche, dị ka onye na-ebelata ngwo, kreenu, onye na-ebelata ihe nketa ụwa, wdg. N'ihi na usoro nke nnyefe gia bụ akara kọntaktị, ogologo oge meshing ga-eme ka gia ọdịda, n'ihi ya, ọ dị mkpa ka simulate ya ike. Li Hongli et al. jiri usoro ntugharị akpaaka na-atụgharị ihe eji eme mbara ala, wee nweta na torque na nrụgide kachasị bụ ahịrị. Wang Yanjun et al. mechiri ngwa mbara ala site na usoro ọgbọ akpaaka, wee megharịa statics na modal simulation nke ngwa mbara ala. N'akwụkwọ a, a na-ejikarị tetrahedron na hexahedron eme ihe iji kewaa ntupu ahụ, a na-enyochakwa nsonaazụ ikpeazụ iji hụ ma ọnọdụ ike na-ezute.

1. Model ntọala na N'ihi analysis

Nhazi akụkụ atọ nke ngwa mbara ala

Ngwa nke mbara alaihe mejupụtara ya bụ mgbanaka mgbanaka, ngwa anyanwụ na ngwa mbara ala. Isi ihe ahọpụtara n'akwụkwọ a bụ: ọnụ ọgụgụ ezé nke mgbanaka gia dị n'ime bụ 66, ọnụ ọgụgụ ezé nke ngwa anyanwụ bụ 36, ọnụ ọgụgụ ezé nke ngwa mbara ala bụ 15, dayameta mpụta nke gia dị n'ime. mgbanaka bụ 150 mm, modulus bụ 2 mm, akụkụ nrụgide bụ 20 Celsius, obosara nha nha bụ 20 mm, ọnụọgụ dị elu nke addendum bụ 1, ọnụọgụ azụ azụ bụ 1. 0.25, ma enwere ngwa mbara ala atọ.

Nyocha simulation static nke ngwa mbara ala

Kọwaa ihe onwunwe: bubata sistemu gia mbara ala akụkụ atọ ewepụtara na sọftụwia UG n'ime ANSYS, wee tọọ paramita ihe, dị ka egosiri na Tebụl 1 n'okpuru:

Meshing: tetrahedron na hexahedron kewara ntupu nke nwere ngwụcha, na nha bụ isi nke mmewere bụ 5mm. Ebe ọ bụ nambara ala gia, ngwa anyanwụ na mgbanaka gia dị n'ime na kọntaktị na ntupu, ntupu nke kọntaktị na ntupu akụkụ na-densified, na size bụ 2mm. Nke mbụ, a na-eji grids tetrahedral, dị ka egosiri na foto 1. A na-emepụta ihe 105906 na ọnụ 177893 na mkpokọta. Mgbe ahụ, a na-anakwere grid hexahedral, dị ka egosiri na foto 2, na sel 26957 na ọnụ 140560 na-emepụta na mkpokọta.

Ibu ngwa ngwa na ọnọdụ oke: dị ka njirimara ọrụ nke ihe eji eme mbara ala na onye na-ebelata, anyanwụ gia bụ ihe na-anya ụgbọ ala, ihe nkedo mbara ala bụ ihe a na-ebugharị, na mmepụta ikpeazụ bụ site na ụgbọelu ụwa. Dozie mgbanaka gia dị n'ime na ANSYS, ma tinye torque nke 500N · m na ngwa anyanwụ, dị ka egosiri na eserese 3.

Nhazi nhazi na nyocha nsonaazụ ya: Nephogram nchụpụ na nephogram nke nrụrụ aka nke static analysis enwetara site na ngalaba grid abụọ ka enyere n'okpuru ebe a, a na-eme nyocha ntụnyere. Site na nephogram nchụpụ nke ụdị grids abụọ ahụ, a na-achọpụta na nchụpụ kachasị na-eme na ọnọdụ ebe anyanwụ gia adịghị ejikọta na mbara ala gia, na nrụgide kachasị na-eme na mgbọrọgwụ nke ntupu gia. Nchegbu kachasị nke grid tetrahedral bụ 378MPa, na nrụgide kachasị nke grid hexahedral bụ 412MPa. Ebe ọ bụ na njedebe mkpụrụ nke ihe ahụ bụ 785MPa na ihe nchekwa bụ 1.5, nrụgide a na-ekwe ka ọ bụrụ 523MPa. Nchegbu kachasị nke nsonaazụ abụọ ahụ dị obere karịa nrụgide a na-ekwe ka enwere ike, ma ha abụọ na-ezute ọnọdụ ike.

2, Nkwubi okwu

Site na ịme anwansị ngwụcha nke ngwa mbara ala, a na-enweta nephogram nchụpụ na nrụrụ aka nke sistemu gia, nke sitere na data kachasị na kacha nta na nkesa ha nambara ala giaenwere ike ịchọta ihe nlereanya. Ọnọdụ nke nrụgide kachasị nhata bụkwa ebe ebe ezé gia nwere ike ịdaba, ya mere ekwesịrị itinye nlebara anya pụrụ iche na ya n'oge imewe ma ọ bụ n'ichepụta. Site na nyocha nke usoro dum nke mbara ala, a na-emeri njehie site na nyocha nke naanị otu nha nha nha.