scholarly journals Cutting Force Prediction and Experiment Verification of Paper Honeycomb Materials by Ultrasonic Vibration-Assisted Machining

2020 ◽  
Vol 10 (13) ◽  
pp. 4676 ◽  
Author(s):  
Wenjun Cao ◽  
Jun Zha ◽  
Yaolong Chen
Keyword(s):  
Finite Element ◽  
Cutting Force ◽  
Ultrasonic Vibration ◽  
Core Material ◽  
Disc Cutter ◽  
Honeycomb Core ◽  
Cutting Force Prediction ◽  
Paper Honeycomb ◽  
Ultrasonic Cutting ◽  
Core Materials

The disc-cutter is a finishing tool for the ultrasonic-cutting of paper honeycomb-core material. The cutting state directly affects the machining accuracy and surface quality of the workpiece. The cutting force is an important physical quantity and the cause of ultrasonic cutting defects of the honeycomb-core material. Due to differences in the mechanical properties and cutting performance of honeycomb-core materials and commonly used metal materials, existing metal-cutting-force models cannot be applied to the calculation of ultrasonic cutting forces in the processing of honeycomb-core materials. In response to this problem—combined with actual working conditions using the ABAQUS finite element analysis software—a finite element simulation model of the ultrasonic vibration-assisted cutting force of the disc-cutter on the honeycomb-core material was established, and the cutting curves and values were obtained. The experiment of ultrasonic vibration cutting of the disc-cutter proves that from the surface morphology of the honeycomb core, the milling-width has the greatest influence on the cutting force, and the cutting-depth has the smallest influence on the cutting force. The maximum error between the cutting force experimental results and the finite element simulation results under the same cutting conditions was 13.2%, which means that the established cutting-force finite element model is more accurate and can be used to predict the cutting in honeycomb ultrasonic vibration-assisted cutting-force value. Finally, based on the response surface method, a three-dimensional cutting force prediction model of the ultrasonic cutting honeycomb core of the disc-cutter was established by using the simulation model data. The results of this study can provide a useful basis for the improvement of cutting performance and processing efficiency in the processing of paper honeycomb-core materials.

Development of the Two-Dimensional Ultrasonic Cutting System Based on the Mechanism of Single-Excitation Elliptical Vibration by Means of Opening Chutes on the Horn

2016 ◽  
Vol 693 ◽  
pp. 1272-1278
Author(s):  
Jie Li ◽  
Feng Jiao ◽  
Ying Niu ◽  
Long Fei Shi
Keyword(s):  
Cutting Force ◽  
Ultrasonic Vibration ◽  
Two Dimensional ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Cutting Experiments ◽  
Cutting System ◽  
Ultrasonic Vibration Cutting ◽  
Ultrasonic Cutting ◽  
Force Characteristics

Based on the mechanism of single-excitation elliptical vibration by means of opening chutes on the horn, a novel two-dimensional ultrasonic cutting system was developed. Vibration characteristics of the two-dimensional ultrasound cutting system were researched and the longitudinal and bending amplitude of the system with different number of chutes were obtained. By using developed two-dimensional ultrasonic vibration cutting systems, series of cutting experiments were carried out and cutting force characteristics were researched compared with that in traditional cutting.

scholarly journals Biomechanical Evaluation of a Tooth Restored with High Performance Polymer PEKK Post-Core System: A 3D Finite Element Analysis

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Ki-Sun Lee ◽  
Joo-Hee Shin ◽  
Jong-Eun Kim ◽  
Jee-Hwan Kim ◽  
Won-Chang Lee ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cyclic Loading ◽  
High Performance ◽  
Core Material ◽  
Element Analysis ◽  
Core System ◽  
High Performance Polymer ◽  
Core Materials

The aim of this study was to evaluate the biomechanical behavior and long-term safety of high performance polymer PEKK as an intraradicular dental post-core material through comparative finite element analysis (FEA) with other conventional post-core materials. A 3D FEA model of a maxillary central incisor was constructed. A cyclic loading force of 50 N was applied at an angle of 45° to the longitudinal axis of the tooth at the palatal surface of the crown. For comparison with traditionally used post-core materials, three materials (gold, fiberglass, and PEKK) were simulated to determine their post-core properties. PEKK, with a lower elastic modulus than root dentin, showed comparably high failure resistance and a more favorable stress distribution than conventional post-core material. However, the PEKK post-core system showed a higher probability of debonding and crown failure under long-term cyclic loading than the metal or fiberglass post-core systems.

scholarly journals Validation of Finite Element Cutting Force Prediction for End Milling

Procedia CIRP ◽  
2012 ◽  
Vol 1 ◽  
pp. 663-668 ◽  
Author(s):  
Xialin Man ◽  
Deyao Ren ◽  
Shuji Usui ◽  
Cody Johnson ◽  
Troy D. Marusich
Keyword(s):  
Finite Element ◽  
Cutting Force ◽  
End Milling ◽  
Cutting Force Prediction ◽  
Force Prediction

Modeling and investigation of cutting force for SiCp/Al composites during ultrasonic vibration-assisted turning

2021 ◽  
pp. 095440892110607
Author(s):  
Jieqiong Lin ◽  
Chao Wang ◽  
Mingming Lu ◽  
Jiakang Zhou ◽  
Shixin Zhao ◽  
...  
Keyword(s):  
Prediction Model ◽  
Cutting Force ◽  
Ultrasonic Vibration ◽  
Cutting Speed ◽  
Machining Process ◽  
Depth Of Cut ◽  
Cutting Force Prediction ◽  
Force Prediction ◽  
Depth Direction ◽  
Experimental Values

The machining process of SiCp/Al composites is considerably difficult because of the addition of ceramic particles. As an effective machining method, ultrasonic vibration-assisted turning is used to process SiCp/Al composites, which can effectively reduce the cutting force, improve the surface quality, and reduce the tool wear. This study developed a cutting force prediction model for ultrasonic vibration-assisted turning of SiCp/Al composites, which comprehensively considers the instantaneous depth of cut and the instantaneous shear angle. This model divides the cutting force into the chip formation force considering the instantaneous depth of cut, the friction force considering the influence of SiC particles at tool-chip interface, the particle fracture force, and the ultrasonic impact force in the cutting depth direction. By comparing the predicted value of the main cutting force with the experimental values, the results present the same trend, which verifies the feasibility of the cutting force prediction model. In addition, the influence of vibration amplitude, depth of cut, and cutting speed on the main cutting force is analyzed. The systematic cutting experiments show that ultrasonic vibration-assisted turning can significantly reduce the cutting force and improve the machinability of SiCp/Al composites.

Full-scale linear cutting tests to check and modify a widely used semi-theoretical model for disc cutter cutting force prediction

2019 ◽  
Vol 15 (6) ◽  
pp. 1481-1500 ◽  
Author(s):  
Yucong Pan ◽  
Quansheng Liu ◽  
Qi Liu ◽  
Jianping Liu ◽  
Xingxin Peng ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Cutting Force ◽  
Full Scale ◽  
Disc Cutter ◽  
Cutting Force Prediction ◽  
Force Prediction
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