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Modeliranje makromehanizma rezanja z abrazivnim vodnim curkom = [The modelling of macromechanism of cutting with abrasive water jet] : doktorsko delo
Orbanić, Henri
Rezanje z abrazivnim vodnim curkom (AVC) je nekonvencionalni obdelovalni postopek, ki uporablja visokohitrostni vodni curek (VC) za pospeševanje zelo trdih abrazivnih zrn. Abrazivna zrna zaradi svoje ...velike hitrosti in trdote odnašajo material. Pri rezanju se pojavijo značilni mikroskopski pojavi na obdelovancu, kot so ukrivljenost rezalne fronte, brazdavost površine reza in koničnost reza, ki vplivajo na natančnost in kakovost obdelave. V delu smo raziskali vzroke in nastanek predhodno naštetih pojavov. Preučili smo oblike rezalne fronte za različne materiale pri različnih obdelovalnih parametrih. Določili smo točko upogiba na rezalni fronti, prek katere lahko spremljamo spreminjanje oblike rezalne fronte med samo obdelavo. Pokazali smo, da se prek določanja naklona rezalne fronte lahko izvede primerjavo med rezanjem različnih materialov. Razvili smo novo metodo za merjenje premera curka in določanje stanja curka, ki deluje na principu merjenja sile curka, ko ta preide rob sonde, nameščene na merilni celici. Razvili smo nov model rezanja z AVC na osnovi metode celičnih avtomatov. Izdelali smo dvo- in trodimenzionalni model. Pokazali smo, da dvodimenzionalni model uspešno simulira spreminjanje krivulje rezalne fronte, če spreminjamo hitrost rezanja, jakost curka ali vrsto materiala. Dvodimenzionalni model smo razširili v tridimenzionalnega, s katerim smo simulirali obliko reza, narejenega z AVC.
Type of material - dissertation
Publication and manufacture - Ljubljana : [H. Orbanić], 2007
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