Sökning: "High Damping Interface"
Visar resultat 1 - 5 av 15 avhandlingar innehållade orden High Damping Interface.
1. Joint Interface Effects on Machining System Vibration
Sammanfattning : Vibration problems are still the major constraint in modern machining processes that seek higher material removal rate, shorter process time, longer tool life and better product quality. Depending on the process, the weaker structure element can be the tool/tool holder, workpiece/fixture or both. LÄS MER
2. Improving Machining System Performance through designed-in Damping : Modelling, Analysis and Design Solutions
Sammanfattning : With advances in material technology, allowing, for instance, engines to withstand higher combustion pressure and consequently improving performance, comes challenges to productivity. These materials are, in fact, more difficult to machine with regards to tool wear and especially machine tool stability. LÄS MER
3. High dynamic stiffness nano-structured composites for vibration control : A Study of applications in joint interfaces and machining systems
Sammanfattning : Vibration control requires high dynamic stiffness in mechanical structures for a reliable performance under extreme conditions. Dynamic stiffness composes the parameters of stiffness (K) and damping (η) that are usually in a trade-off relationship. This thesis study aims to break the trade-off relationship. LÄS MER
4. Controlling the dynamic characteristics of machining systems through consciously designed joint interfaces
Sammanfattning : The precision of machining systems is ever increasing in order to keep up with components’ accuracy requirements. At the same time product variants areincreasing and order quantities are decreasing, which introduces high demands on the capability of machining systems. LÄS MER
5. On efficient and adaptive modelling of friction damping in bladed disks
Sammanfattning : This work focuses on efficient modelling and adaptive control of friction damping in bladed disks. To efficiently simulate the friction contact, a full-3D time-discrete contact model is reformulated and an analytical expression for the Jacobian matrix is derived that reduces the computation time drastically with respect to the classical finite difference method. LÄS MER