?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F182%2F&rft.title=The+Effects+of+Impact+on+Design+Features&rft.creator=Lewis%2C+Greg&rft.subject=None%2FOther&rft.description=This+report+concerns+with+finding+a+simplified+model+for+an+injection+molding+machine%2C+which+consists+of+a+hydraulic+piston+that+forces+some+molten+metal+into+a+mold.%0A%0AThe+model+currently+used+by+Husky+ignores+all+effects+except+the+deformation+of+the+piston+and+housing%2C+which+is+assumed+to+be+elastic.+The+impact+is+modelled+using+a+mass-spring+system%2C+where+the+force+of+impact+is+obtained+for+a+given+impact+velocity%2C+system+mass+and+pre-calculated+%E2%80%9Cspring%E2%80%9D+constants+for+the+impacting+bodies.+In+order+to+determine+the+importance+of+the+presence+of+the+hydraulic+fluid%2C+the+compressibility+of+the+molten+metal%2C+and+the+leakage+past+the+screw+tip%2C+we+will+assume+that+the+deformation+of+the+piston+and+housing+can+be+ignored.+However%2C+in+order+to+make+quantitative+predictions+of+the+impact+forces%2C+it+is+necessary+to+include+the+effects+due+to+the+compressibility%0Aof+the+machine+parts.+Thus%2C+we+also+investigate+a+model+that%2C+like+the+current+Husky+model%2C+uses+a+mass-spring+system+to+incorporate+the+elastic+deformation+of+the+piston+and+the+housing.&rft.date=2004&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F182%2F1%2Fhusky_injection.pdf&rft.identifier=++Lewis%2C+Greg++(2004)+The+Effects+of+Impact+on+Design+Features.++%5BStudy+Group+Report%5D+++++