Counterweight Measurements Device Development

Halla-aho, Pasi; Mäntylä, Antti; Frondelius, Tero; Helander, Tommi; Hautala, Juha

doi:10.23998/rm.65050

Cited by 6 publications

(8 citation statements)

References 5 publications

(5 reference statements)

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“…Power train simulation models are validated by torsional vibrations measurements from crank shaft and camshafts and by acceleration measurements from crankshaft counter weights [6]. Figure 3 compares a measurement data and steady state simulation results from the last two four-stroke cycles after the transient error from the beginning of the simulation has faded out.…”

Section: Resultsmentioning

confidence: 99%

Dynamic Gear Wheel Simulations using Multibody Dynamics

Kuivaniemi¹,

Mäntylä²,

Väisänen³

et al. 2017

RakMek

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Section: Resultsmentioning

confidence: 99%

Dynamic Gear Wheel Simulations using Multibody Dynamics

Kuivaniemi¹,

Mäntylä²,

Väisänen³

et al. 2017

RakMek

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“…Deploying virtual engine models, the analyst can design the best possible measurement points to make the model verification as easy and as accurate as possible. Due to the digitalization, big data analysis [80,81] becomes more and more important. First, some peculiar features of the big data analysis are explained.…”

Section: Validation and Product Testingmentioning

confidence: 99%

“…If already delivered products start to malfunction, the only way to solve the problem and learn from it is to acquire measurement data from the field, do data analysis, and provide options for problem-solving based on the analysis results. The importance of data analysis is nowadays well understood [82], and companies have a rapidly growing need to find data analysts and software engineers or partners to improve the company data analysis capabilities [39,44,46,81].…”

Section: Example 1: Big Data Analysismentioning

confidence: 99%

“…The purpose of the analysis is to get the displacement amplitudes of the counterweight for each specific eigenmode. Halla-aho et al [81] have developed an intelligent algorithm that can perform all the needed calculations on the fly. The algorithm can be triggered automatically according to specified limit values to avoid unnecessary calculations when nothing unusual is happening.…”

Section: Example 2: Counterweight Measurements [81]mentioning

confidence: 99%

See 1 more Smart Citation

Simulation-Driven Development of Combustion Engines: Theory and Examples

Frondelius

Tienhaara

Kömi

et al. 2018

SAE Technical Paper Series

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T his paper describes the simulation-driven design process used in engines technology. The research question is "how to use research in the structural analysis and dynamics field to ensure world-class product development?" This paper describes research on simulation methodologies from the design process perspective, demonstrating the need for research in various steps of product development. Each section of the paper includes one or two practical examples in which research was needed to increase product design quality. In the product definition section, the Digital Design Platform (DDP) shows the coupling between product requirements and simulation tasks. At the concept design stage, it is shown that computational methods can optimize the placement of material in the case of the main bearing cap topology. The second example is JuliaFEM, an open-source finite element method (FEM) platform, which is suitable for heavy-duty method development, where the internals of the FE solver is needed to make new calculation methodologies available. The next section is about detailed design, where an example of an oil sump welds fatigue illustrates the continuous improvement of the simulation methodology. The second example is connecting rod fretting calculation, which illustrates the full complexity of the structural analysis and dynamics simulations. The second last process step is the virtual validation, where first the cylinder head simulation methodology shows the internal connections between different disciplines' simulations. Another example here is the crankshaft virtual validation process, which describes the complexity of the "simple" component calculation as well as illustrates the number of needed competencies. Finally, in the validation process step, Big Data analyses describe the internals and complexity of the methodologies. Lastly, counterweight measurement device development illustrates that validation of the simulation models and methods sometimes leads toward a measurement device development project. As a conclusion, all the previous methodologies are used to build the Wärtsilä 31 engine, which is the most efficient four-stroke engine in the world. It is, of course, a performance achievement, but a lot of research in simulation methodologies, as explained, was needed to make a reliable product with such a high cylinder peak pressure.

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“…The importance of data analysis is well understood nowadays, and companies have a rapidly growing need to find data analysts and software engineers or partners to improve the company data analysis capabilities. [4,5,6,9].…”

Section: Introductionmentioning

confidence: 99%

Analyzing 3 TB Field Measurement Data Set

Aho¹,

Frondelius²

2017

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This arcicle describes the use of intelligent algorithms for analysingfield measurement data. The main focus is on describing the generalworkflow and practical issues when the amount of data is ''big''and typical data analysis methods for small data cannot be used. Whenthe amount of data is tens of terabytes, it is no longer fitting tocomputer memory. Data visualization is also challenging: visualizationtools can only render a small fraction of data to computer screenand visual inspecting of the whole dataset is not meaningful at all. Thedata is simply too big. Thus, new approaches to study data are neededwhere the data is processed automatically in calculation clusterswithout manual human work. The basic idea of data mining is to graduallyreduce the amount of data by various techniques, as long as the finaldata contains only information relevant to the research question and insuch a compact form that its viewing from the human point of viewis rational use of time.

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Counterweight Measurements Device Development

Cited by 6 publications

References 5 publications

Dynamic Gear Wheel Simulations using Multibody Dynamics

Dynamic Gear Wheel Simulations using Multibody Dynamics

Simulation-Driven Development of Combustion Engines: Theory and Examples

Analyzing 3 TB Field Measurement Data Set

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