Fak. 5 Verkehrs- und Maschinensysteme

1073 Items

Recent Submissions
Grundlagen und Anwendbarkeit von Magneto-Adaptronischen Transducern (MATs) an ferromagnetischen Materialien zur aktiven Schall- und Schwingungsminderung

Glugla, Markus (2018)

Die magnetischen Eigenschaften von ferromagnetischen Materialien zeigen zwei Effekte, den Joule- und den Villari-Effekt. Der Joule-Effekt, auch bekannt als magnetostriktiver Effekt, beschreibt die Längen- und Volumenänderung eines ferromagnetischen Materials unter Einwirkung eines magnetischen Felds. Der inverse Vorgang, die Änderung des Magnetfelds eines ferromagnetischen Materials unter Einwi...

Policy Evaluation in Multiagent Transport Simulations

Grether, Dominik ; Kickhöfer, Benjamin ; Nagel, Kai (2010)

In democratically organized societies, the implementation of measures with regressive effects on welfare distribution tends to be complicated because of low public acceptance. The microscopic multiagent simulation approach presented in this paper can help to design better solutions in such situations. Income can be included in utility calculations for a better understanding of problems linked t...

Adding Mode Choice to Multiagent Transport Simulation

Rieser, Marcel ; Grether, Dominik ; Nagel, Kai (2009)

It had been shown previously that so-called agent-based traffic micro-simulations could be used for dynamic traffic assignment, that is, iterative route adjustment, until either a Nash equilibrium or some steady state distribution between alternatives had been found. It was also shown that the same approach could be extended to (departure) time adjustment; that is, time adjustment and route adj...

Agent-Oriented Coupling of Activity-Based Demand Generation with Multiagent Traffic Simulation

Rieser, Marcel ; Nagel, Kai ; Beuck, Ulrike ; Balmer, Michael ; Rümenapp, Jens (2007)

The typical method to couple activity-based demand generation (ABDG) and dynamic traffic assignment (DTA) is time-dependent origin-destination (O-D) matrices. With that coupling method, the individual traveler's information gets lost. Delays at one trip do not affect later trips. However, it is possible to retain the full agent information from the ABDG by writing out all agents' plans, instead...

Agent-Based Demand-Modeling Framework for Large-Scale Microsimulations

Balmer, Michael ; Axhausen, Kay W. ; Nagel, Kai (2006)

Microsimulation is becoming increasingly important in traffic demand modeling. The major advantage over traditional four-step models is the ability to simulate each traveler individually. Decision-making processes can be included for each individual. Traffic demand is the result of the different decisions made by individuals; these decisions lead to plans that the individuals then try to optimi...

Modeling Location Choice of Secondary Activities with a Social Network of Cooperative Agents

Marchal, Fabrice ; Nagel, Kai (2005)

Activity-based models in transportation science focus on the description of human trips and activities. Modeling the spatial decision for so-called secondary activities is addressed in this paper. Given both home and work locations, where do individuals perform activities such as shopping and leisure? Simulation of these decisions using random utility models requires a full enumeration of possi...

Robustness of Efficient Passenger Boarding Strategies for Airplanes

Ferrari, Pieric ; Nagel, Kai (2005)

Common wisdom is that airplanes make money only when they are in the air. Therefore, turnaround time (turn time) on the ground should be reduced as much as possible. An important contribution to the turn time is airplane boarding time. Many different schemes are in use, from random seat selection to sophisticated boarding groups. A simulation model is described to evaluate different boarding st...

Integrating CEMDAP and MATSIM to Increase the Transferability of Transport Demand Models

Ziemke, Dominik ; Nagel, Kai ; Bhat, Chandra (2015)

An activity-based approach to transport demand modeling is considered the most behaviorally sound procedure to assess the effects of transport policies. This paper investigates whether it is possible to transfer an estimated model for activity generation from elsewhere (the estimation context) and use local area (application context) traffic counts to develop a local area activity-based transpo...

Activity-Based Computation of Marginal Noise Exposure Costs

Kaddoura, Ihab ; Nagel, Kai (2016)

In this paper, an innovative simulation-based approach is presented to calculate optimal dynamic, road- and vehicle-specific tolls on the basis of marginal traffic noise exposures. The proposed approach combines the advantages of an activity-based simulation with the economically optimal way of price setting. Temporal and spatial differences of traffic noise levels and population densities are ...

An acoustic time-of-flight technique for unsteady temperature measurements in combustion chambers

Waßmer, Dominik (2018)

In consideration of the manifold alternative electric energy sources, load flexibility in modern gas turbines is an essential requirement. To this end, the operational range of the engines must be extended. However, this is often impeded by low-frequency combustion instabilities that are associated with acoustics generated within the gas turbine combustor. These high-amplitude pressure oscillat...

Simulationsgestützte Einflussanalyse der Eigenspannungs- und Verzugsausbildung beim Schweißen mit artgleichen und nichtartgleichen Zusatzwerkstoffen

Neubert, Sebastian (2018)

Die Hauptanliegen dieser Arbeit bestehen darin, den Einsatz der Schweißstruktursimulation durch eine Reduzierung des werkstoffbezogenen Modellierungsaufwandes zu fördern und einen Beitrag zum Verständnis der Anwendung von hochfesten hochlegierten Zusatzwerkstoffen beim Verschweißen hochfester, niedriglegierter Feinkornbaustähle zu liefern. Im Fokus stehen dabei numerische Einflussanalysen zur A...

Choice Models in MATSim

Flötteröd, Gunnar ; Kickhöfer, Benjamin (2016)

This chapter attempts to reconcile MATSim’s mechanisms of plan “mutation”, “selection” and “execution”, borrowed from evolutionary computation, with a discrete choice modeling perspective.

Some History of MATSim

Nagel, Kai ; Axhausen, Kay W. (2016)


How to Write Your Own Extensions and Possibly Contribute Them to MATSim

Zilske, Michael (2016)


Organization: Development Process, Code Structure and Contributing to MATSim

Rieser, Marcel ; Horni, Andreas ; Nagel, Kai (2016)

This chapter describes how new functionality enters MATSim. It describes the MATSim team and community, the different roles existing in the MATSim project, the development drivers and processes, and the tools used for integration. The goal is to provide an overview of the development process so that one quickly finds access to the MATSim community and is able to efficiently contribute to MATSim...

Discontinued Modules

Nagel, Kai ; Horni, Andreas (2016)

This chapter lists modules that were important for several projects in the past, but which are no longer being developed.

Other Experiences with Computational Performance Improvements

Nagel, Kai (2016)


More About Configuring MATSim

Horni, Andreas ; Nagel, Kai (2016)

This chapter describes configuration options that can be used together with the three basic elements: config file, population and network.

Emission Modeling

Kickhöfer, Benjamin (2016)

This chapter presents the emission modeling tool developed and tested by Hülsmann et al. (2011) and further improved by Kickhöfer et al. (2013). The text in this chapter is a slightly updated version of the emission modeling tool description in Kickhöfer (2014). The tool calculates warm and cold-start exhaust emissions for private cars and freight vehicles by linking MATSim simulation output to...


Ziemke, Dominik (2016)