STMT an der RWTH Aachen
Karteikarten und Zusammenfassungen für STMT an der RWTH Aachen
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Lerne jetzt mit Karteikarten und Zusammenfassungen für den Kurs STMT an der RWTH Aachen.
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
Why do we need simulations?
We use simulations to reduce costs in case of
- material use, tool cost and pre-rpoduction trials
to save time
- lead time, required time for training
and improve quality
- reliability, complex parts, new materials
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
What is a model in case of simulations?
Abstract system that corresponds to a real system and is used for expensive and/or impossible investigations, calculations and explanations or demonstration purposes.
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
Whats the difference between a model and a simulation?
A simulation is a replication of a dynamic process based on a model.
A model is an simple abstraction/description of a real and complex system.
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
Which kind of information delivers a simulation?
It delivers general information about
- elements,
- structure and
- behavior
of a model during usage, to estimate correlations onto the reality.
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
Which kind of models are there to estimate manufacturing process, for example?
- Molecular dynamics (MD)
- Kinematics
- Finite Element Analysis
- Fundamental
- Regression
- Artifical neural nets
- rule based
rule based (macroscopic) -> MD (microscopic)
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
What are physical models?
Molecular Dynamics, Kinematics, Finite Element Analysis, Fundamental, Regressions (Artificial Neural Nets somehow included)
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
What are empirical models?
regression and artifical neural nets, they are based on experimental results and therefore only valid within these ranges
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
What are heuristic models?
rule based
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
Whats the problem with heuristic and empirical models?
Heuristic and empirical models are limited and difficult to transfer from one process to another. They are based on experimental results and are only valid within the same experimental range.
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
What is the difference between forming(bulk and sheet) and sheet metal cutting?
Forming (bulk, sheet):
- Manufacturing by plastic deformation
- Constant workpiece volume
- Constant workpiece mass
- workpiece stays one piece
Sheet metal cutting:
- Manufacturing by cutting
- Material cohesion is released locally
- No generation of formless substance
(no chips)
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
What is the difference between bulk and sheet metal forming in case of forces?
bulk forming - high forces needed
Sheet metal forming - Low to medium forces
Beispielhafte Karteikarten für STMT an der RWTH Aachen auf StudySmarter:
What is the difference between bulk and sheet metal forming in case of plastic deformation?
Bulk Forming - high plastic deformation
Sheet metal forming - Lower plastic deformation
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