Energy-Based Analysis of Ultrasonically Assisted Turning

Volkov, G. A.; Bratov, Vladimir; Gruzdkov, A. A.; Babitsky, Vladimir; Petrov, Yu. V.; Silberschmidt, Vadim V.

doi:10.1155/2011/598106

Cited by 25 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To predict the strength of brittle materials in a wide range of strain rates, the structural−temporal approach [32,33] is considered, based on the idea of a material incubation time [35]. The corresponding fracture criteria proposed in [36][37][38][39][40] allowed for studying a large set of different phenomena of the dynamic brittle fracture process successfully. The set of material parameters in this approach is invariant to the history of loading, Σ(t).…”

Section: Fracture Criterion Of Brittle Materialsmentioning

confidence: 99%

Structural-Temporal Peculiarities of Dynamic Deformation of Layered Materials

Selyutina

Petrov

2022

Materials

View full text Add to dashboard Cite

The temporal nature of static and dynamic deformation of fibre metal laminates is discussed here. The aim of the study is to verify the proposed innovate model using layered composites. The modified relaxation model is based on the earlier formulated plasticity relaxation model for homogeneous materials. The proposed relaxation model makes it possible to describe the deformation of the layered composites from elastic to irreversible deformation, finalised by the failure moment. The developed approach allows us to consider the effects of the transition from static to dynamic loading. This means that the model-calculated dynamic limiting characteristics of the metal and the strength of brittle materials will have a determining character, depending on the loading history. The verification of the model using a glass fibre reinforced aluminium composite, glass fibre reinforced titanium composite, carbon fibre reinforced aluminium composite, and Kevlar fibre reinforced aluminium composite with different thickness ratios between metal and polymer layers is given. It is shown that the theoretical deformation curves of the metal composites at the various strain rates, finalised by brittle fracture of the polymer layers or continued irreversible deformation of remaining unbroken metal layers with destroyed polymer (fibre/epoxy) layers, are predicted. Based on the same structural−temporal parameters for five (Ti/GFRP (0/90)/Ti/GFRP(90/0)/Ti) and three (Ti/GFRP(0/90/90/0)/Ti) layers glass fibre reinforced titanium composites and the polymer layers, one-stage and two-stage stress drops during the irreversible deformation of the composite under static and dynamic loading are simulated. The change of the multi-stage fracture of the composite from static to dynamic loading and the fracture characteristic times of the polymer (100 s and 15,400 s) and the metal (8.4 ms) are correlated. Continued plastic deformation of the composite after fracture of the polymer layers is related with different values of the characteristic relaxation times of the polymer (fibre/epoxy) and the metal layers.

show abstract

Section: Fracture Criterion Of Brittle Materialsmentioning

confidence: 99%

Structural-Temporal Peculiarities of Dynamic Deformation of Layered Materials

Selyutina

Petrov

2022

Materials

View full text Add to dashboard Cite

show abstract

“…(3) as critical fracture condition in finite element numerical analysis gives a possibility for better understanding of fracture dynamics nature (refs. [13,14]) and even prediction of new effects typical of dynamic processes (ref. [15]).…”

Section: Incubation Time Fracture Criterionmentioning

confidence: 99%

Incubation time approach in rock fracture dynamics

Smirnov

Petrov

Bratov

2011

Sci. China Phys. Mech. Astron.

View full text Add to dashboard Cite

The paper is summarizing latest results connected with application of the incubation time approach to problems of dynamic fracture of rock materials. Incubation time based fracture criteria for intact media and media with cracks are discussed. Available experimental data on high rate fracture of different rock materials and incubation time based fracture criteria are used in order to evaluate critical parameters of causing fracture in these materials. Previously discovered possibility to optimize (minimize) energy input for fracture is discussed in connection to industrial rock fracture processes. It is shown that optimal value of momentum associated with critical load in order to initialize fracture in rock media does strongly depend on the incubation time and the impact duration. Existence of optimal load shapes minimizing momentum for a single fracturing impact or a sequence of periodic fracturing impacts is demonstrated.incubation time, dynamic fracture, rocks, dynamic strength, fracture toughness, crack resistance, energy and momentum input, fracture process optimization PACS number(s): 46.50.+a, 62.20.mm, 91.60.Ba Citation:Smirnov V, Petrov Y V, Bratov V. Incubation time approach in rock fracture dynamics.

show abstract

“…Through constant development in the last decade, this technique has been proven to be a promising method in terms of almost all cutting performances in cutting of various difficult-tocut materials [6][7][8][9]. Compared with the conventional cutting (CC) and ultrasonic vibration cutting, the UEVC have many advantages such as less cutting forces, longer tool life, and better surface finish [10,11].…”

Section: Introductionmentioning

confidence: 99%

A Study on Ultrasonic Elliptical Vibration Cutting of Inconel 718

Haidong

Zou

et al. 2016

Shock and Vibration

View full text Add to dashboard Cite

Inconel 718 is a kind of nickel-based alloys that are widely used in the aerospace and nuclear industry owing to their high temperature mechanical properties. Cutting of Inconel 718 in conventional cutting (CC) is a big challenge in modern industry. Few researches have been studied on cutting of Inconel 718 using single point diamond tool applying the UEVC method. This paper shows an experimental study on UEVC of Inconel 718 by using polycrystalline diamond (PCD) coated tools. Firstly, cutting tests have been carried out to study the effect of machining parameters in the UEVC in terms of surface finish and flank wear during machining of Inconel 718. The tests have clearly shown that the PCD coated tools in cutting of Inconel 718 by the UEVC have better performance at 0.1 mm depth of cut as compared to the lower 0.05 mm depth of cut and the higher 0.12 or 0.15 mm depth of cut. Secondly, like CC method, the cutting performance in UEVC increases with the decrease of the feed rate and cutting speed. The CC tests have also been carried out to compare performance of CC with UEVC method.

show abstract

Energy-Based Analysis of Ultrasonically Assisted Turning

Cited by 25 publications

References 13 publications

Structural-Temporal Peculiarities of Dynamic Deformation of Layered Materials

Structural-Temporal Peculiarities of Dynamic Deformation of Layered Materials

Incubation time approach in rock fracture dynamics

A Study on Ultrasonic Elliptical Vibration Cutting of Inconel 718

Contact Info

Product

Resources

About