High-order full-discretization method using Lagrange interpolation for stability analysis of turning processes with stiffness variation

2017 ◽  
Vol 386 ◽  
pp. 50-64 ◽  
Author(s):  
Yuxin Sun ◽  
Zhenhua Xiong
Keyword(s):  
Stability Analysis ◽  
Lagrange Interpolation ◽  
High Order ◽  
Discretization Method ◽  
Full Discretization ◽  
Stiffness Variation

scholarly journals Stability Analysis of Multi-Discrete Delay Milling with Helix Effects Using a General Order Full-Discretization Method Updated with a Generalized Integral Quadrature

Mathematics ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 1003
Author(s):  
Chigbogu Ozoegwu ◽  
Peter Eberhard
Keyword(s):  
Stability Analysis ◽  
High Speed ◽  
High Order ◽  
Discretization Method ◽  
High Order Methods ◽  
Full Discretization ◽  
Low Speed ◽  
Automated Algorithm ◽  
Stability Lobes ◽  
General Order

A tensor-based general order full-discretization method is enhanced with the capacity to handle multiple discrete delays and helix effects leading to a unique automated algorithm in the stability analysis of milling process chatter. The automated algorithm is then exploited in investigating the effects of interpolation order of chatter states and helix-induced terms on the convergence of milling stability lobes. The enhanced capacity to handle the distributed helix effects is based on a general order formulation of the Newton-Coates integral quadrature method. Application to benchmark milling models showed that high order methods are necessary for convergence of the low speed domain of stability lobes while all the numerically stable orders converge in the high speed domain where the ultra-high order methods are prone to numerical instability. Also, composite numerical integration of the helix-induced integrand beyond the usual zero-th order method leads to higher accuracy of stability lobes especially in the low speed domain.

Stability analysis of high order neural networks with proportional delays

2020 ◽  
Vol 372 ◽  
pp. 33-39 ◽  
Author(s):  
Wenqi Shen ◽  
Xian Zhang ◽  
Yantao Wang
Keyword(s):  
Neural Networks ◽  
Stability Analysis ◽  
High Order ◽  
Proportional Delays

Third-order updated full-discretization method for milling stability prediction

2017 ◽  
Vol 92 (5-8) ◽  
pp. 2299-2309 ◽  
Author(s):  
Zhenghu Yan ◽  
Xibin Wang ◽  
Zhibing Liu ◽  
Dongqian Wang ◽  
Li Jiao ◽  
...  
Keyword(s):  
Discretization Method ◽  
Stability Prediction ◽  
Third Order ◽  
Full Discretization ◽  
Milling Stability
Sign in / Sign up

Export Citation Format

Share Document