PSI - Issue 14

C. Praveen et al. / Procedia Structural Integrity 14 (2019) 798–805 C. Praveen et al. / Structural Integrity Procedia 00 (2018) 000–000 C. Praveen et al. / Structural Integrity Procedia 00 (2018) 000–000 C. Praveen t al. / Structural Integrity Procedia 00 (20 8) 000–000 C. Praveen et al. / Structural Integrity Procedia 00 (2018) 000–000

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4. Applicability of the model Predicted true stress vs. true strain data has been compared with the experimental data obtained for smooth specimen at 300 K. An excellent agreement between the predicted tensile curves (represented by solid lines) with experimental data (represented by symbols) can be seen in Fig. 3. The variations in nominal stress with nominal strain for three different notch radii are shown in Fig. 4. The presence of notch in the specimen constraints the deformation in lateral direction which results in tri-axial stress state in the notch root. The difficulty in spreading of yield zone in the presence of tri-axial stresses leads to higher yield strength of the notched specimen than smooth specimen. The constraint effect increases with decrease in notch radius. This implies that the specimen with lower notch radius experiences higher stress triaxiality in vicinity of notch-root. With progressive deformation, notch-strengthening effect increases with decrease in notch radius as shown in Fig. 4.The further applicability of the model has been demonstrated by comparing the predicted values of yield and ultimate tensile strength for notched specimens with experimental values reported by Kumar et al. (2014). Good agreement between predicted and experimental values is obtained as shown in Fig. 5. 4. pplicability of the odel Predicted true stress vs. true strain data has been co pared ith the experi ental data obtained for s ooth speci en at 300 . n excellent agree ent bet een the predicted tensile curves (represented by solid lines) ith experi ental data (represented by sy bols) can be seen in Fig. 3. he variations in no inal stress ith no inal strain for three different notch radii are sho n in Fig. 4. he presence of notch in the speci en constraints the defor ation in lateral direction hich results in tri-axial stress state in the notch root. he difficulty in spreading of yield zone in the presence of tri-axial stresses leads to higher yield strength of the notched speci en than s ooth speci en. he constraint effect increases ith decrease in notch radius. his i plies that the speci en ith lo er notch radius experiences higher stress triaxiality in vicinity of notch-root. ith progressive defor ation, notch-strengthening effect increases ith decrease in notch radius as sho n in Fig. 4. he further applicability of the odel has been de onstrated by co paring the predicted values of yield and ulti ate tensile strength for notched speci ens ith experi ental values reported by u ar et al. (2014). ood agree ent bet een predicted and experi ental values is obtained as sho n in Fig. 5. 4. Applicability of the model Predicted true stress vs. true strain data has been compared with the experimental data obtained for smooth specimen at 300 K. An excellent agreement between the predicted tensile curves (represented by solid lines) with experimental data (represented by symbols) can be seen in Fig. 3. The variations in nominal stress with nominal strain for three different notch radii are shown in Fig. 4. The presence of notch in the specimen constraints the deformation in lateral direction which results in tri-axial stress state in the notch root. The difficulty in spreading of yield zone in the presence of tri-axial stresses leads to higher yield strength of the notched specimen than smooth specimen. The constraint effect increases with decrease in notch radius. This implies that the specimen with lower notch radius experiences higher stress triaxiality in vicinity of notch-root. With progressive deformation, notch-strengthening effect increases with decrease in notch radius as shown in Fig. 4.The further applicability of the model has been demonstrated by comparing the predicted values of yield and ultimate tensile strength for notched speci ens with experimental values reported by Kumar et al. (2014). Good agreement between predicted and experimental values is obtained as shown in Fig. 5. 4. Applicability of the odel Predicted true stress vs. true strain data has been co pared with the experi ental data obtained for s ooth speci en at 300 K. An excellent agree ent between the predicted tensile curves (represented by solid lines) with experi ental data (represented by sy bols) can be seen in Fig. 3. The variations in no inal stress with no inal strain for three different notch radii are shown in Fig. 4. The presence of notch in the speci en constraints the defor ation in lateral direction which results in tri-axial stress state in the notch root. The difficulty in spreading of yield zone in the presence of tri-axial stresses leads to higher yield strength of the notched speci en than s ooth speci en. The constraint effect increases with decrease in notch radius. This i plies that the speci en with lower notch radius experiences higher stress triaxiality in vicinity of notch-root. ith progressive defor ation, notch-strengthening effect increases with decrease in notch radius as shown in Fig. 4.The further applicability of the odel has been de onstrated by co paring the predicted values of yield and ulti ate tensile strength for notched speci ens with experi ental values reported by Ku ar et al. (2014). Good agree ent between predicted and experi ental values is obtained as shown in Fig. 5.

Fig. 3. Variations in predicted and experimental true stress-true plastic strain data for type 316LN SS smooth specimen at 300K Fig. 3. Variations in predicted and experimental true stress-true plastic strain data for type 316 SS s ooth specimen at 300K Fig. 3. Variations in predicted and experimental true stress-true plastic strain data for type 316LN SS smooth specimen at 300K Fig. 3. Variations in predicted and experimental true stress-true plastic strain data for type 316LN SS s ooth speci en at 300K

Fig. 4. Variations in nominal stress - nominal strain data predicted using finite element simulation for different notch radius of type 316LN SS at 300K Fig. 4. ariations in no inal stress - no inal strain data predicted using finite ele ent si ulation for different notch radius of type 316 SS at 300 Fig. 4. Variations in nominal stress - nominal strain data predicted using finite element simulation for different notch radius of type 316LN SS at 300K Fig. 4. Variations in no inal stress - no inal strain data predicted using finite ele ent si ulation for different notch radius of type 316LN SS at 300K

Fig. 5. Variations in experimental and predicted yield and ultimate tensile strength values for different notch radius of type 316LN SS at 300 K. Fig. 5. ariations in experi ental and predicted yield and ulti ate tensile strength values for different notch radius of type 316 SS at 300 . Fig. 5. Variations in experimental and predicted yield and ultimate tensile strength values for different notch radius of type 316LN SS at 300 K. Fig. 5. Variations in experi ental and predicted yield and ulti ate tensile strength values for different notch radius of type 316LN SS at 300 K.