Influence of punch properties on contact mechanics of coated substrates
19th International Conference on Machine Design and Production (UMTIK 2022), Nevşehir, Türkiye, 31 Ağustos - 03 Eylül 2022, ss.301-316, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Basıldığı Şehir: Nevşehir
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.301-316
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Hacettepe Üniversitesi Adresli: Evet
Özet
The contact mechanics between a deformable elastic punch and a coated half-plane substrate model is examined. The half-plane substrate is made of Ti6Al4V metallic alloy and coating is the ceramics named as ZrO2. Ti6Al4V/ZrO2 coating substrate model is in contact between a deformable punch made of Si3N4. The displacement and stress expressions are derived based on theory of elasticity and the equilibrium equation. Boundary and interface continuity conditions are determined. To obtain contact and subsurface stresses, finite element method is utilized. The accuracy of the developed computational solution is tested by employing mesh independence study. Then, parametric analyses are carried out to reveal elastic punch properties, coefficient of friction and thickness of the coating on stress distributions. It is demonstrated that punch modulus has a profound impact on results, hence designing of punch material is critical to avoid surface related damages.