Topic
Stability Model
About: Stability Model is a research topic. Over the lifetime, 81 publications have been published within this topic receiving 1192 citations.
Papers published on a yearly basis
Papers
TL;DR: In this paper, the authors present regenerative chip and regenerative areal cutting edge contact length based dynamic cutting force models, which consider cutting conditions and turning tool geometry, and use Nyquist stability criterion to predict chatter stability.
Abstract: The accurate prediction of chatter stability in general turning operations requires the inclusion of tool geometry and cutting conditions This paper presents regenerative chip and regenerative chip arealcutting edge contact length based dynamic cutting force models, which consider cutting conditions and turning tool geometry The cutting process is modeled as it takes place along the equivalent chord length between the two end points of the cutting edge The regenerative chip model is simple, and the stability can be solved directly However, the three-dimensional model considers the effect of tool vibrations at the present and previous spindle revolutions on the chip area, chord length, and force directions and is solved using Nyquist stability criterion The penetration of worn tool flank into the finish surface is considered as a source of process damping The effects of the nose radius, approach angle of the tool, and feedrate are investigated The proposed stability model is compared favorably against the experimental results
151 citations
TL;DR: The HIRESSS (HIgh REsolution Slope Stability Simulator) as mentioned in this paper is a physically based distributed slope stability simulator for analyzing shallow landslide triggering conditions in real time and on large areas using parallel computational techniques.
Abstract: . HIRESSS (HIgh REsolution Slope Stability Simulator) is a physically based distributed slope stability simulator for analyzing shallow landslide triggering conditions in real time and on large areas using parallel computational techniques. The physical model proposed is composed of two parts: hydrological and geotechnical. The hydrological model receives the rainfall data as dynamical input and provides the pressure head as perturbation to the geotechnical stability model that computes the factor of safety (FS) in probabilistic terms. The hydrological model is based on an analytical solution of an approximated form of the Richards equation under the wet condition hypothesis and it is introduced as a modeled form of hydraulic diffusivity to improve the hydrological response. The geotechnical stability model is based on an infinite slope model that takes into account the unsaturated soil condition. During the slope stability analysis the proposed model takes into account the increase in strength and cohesion due to matric suction in unsaturated soil, where the pressure head is negative. Moreover, the soil mass variation on partially saturated soil caused by water infiltration is modeled. The model is then inserted into a Monte Carlo simulation, to manage the typical uncertainty in the values of the input geotechnical and hydrological parameters, which is a common weak point of deterministic models. The Monte Carlo simulation manages a probability distribution of input parameters providing results in terms of slope failure probability. The developed software uses the computational power offered by multicore and multiprocessor hardware, from modern workstations to supercomputing facilities (HPC), to achieve the simulation in reasonable runtimes, compatible with civil protection real time monitoring. A first test of HIRESSS in three different areas is presented to evaluate the reliability of the results and the runtime performance on large areas.
150 citations
TL;DR: In this paper, an analytical model for the stability of turning and boring processes is proposed, which includes the dynamics of the system in a multidimensional form, uses the true process geometry and models the insert nose radius in a precise manner.
88 citations
TL;DR: In this paper, the 2:1 internal resonance phenomenon between modes that occurs when the excitation frequency is twice the first out-of-plane natural frequency of the cable was investigated.
62 citations
TL;DR: In this article, the authors proposed an analytical scheme for stability analysis in turning process by considering the motion of tailstock-supported workpiece using a compliance model of tool and work and developed a dynamic cutting force model based on relative motion between the cutting tools and workpiece.
Abstract: This paper proposes an analytical scheme for stability analysis in turning process by considering the motion of tailstock-supported workpiece using a compliance model of tool and work. A dynamic cutting force model based on relative motion between the cutting tool and workpiece is developed to study the chatter stability. Linear stability analysis is carried out in the frequency domain and the stability charts are obtained with and without considering workpiece flexibility. Variations of stability limits with workpiece dimensions and cutter position as well as the effects of cutting tool dynamics are studied and wherever possible results are compared with existing models. Experimental analysis is conducted on tailstock-supported workpiece to examine the correctness of the proposed stability model.
54 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 3 |
| 2020 | 4 |
| 2019 | 2 |
| 2018 | 5 |
| 2017 | 5 |
| 2016 | 5 |