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2.10  Sensor placement experiment using SDT fe_range DOE

d_shm is a demo function using fe_range-based parametric series of experiments. This was originally developped at ENSAM/PIMM to study the case of CFRP plates equipped with piezoelectric patch-shaped sensors-actuators for SHM applications xxxRef xxx

A typical use of d_shm would involve the following steps:

1. Parameters range definition (each row of the Range.val structure will describe a different experiment) xxx describing MeshCfg, SimuCfg and RunCfg configuration sets, as well as post-processing options)
2. DOE creation via d_shm RangeCheck command
3. Loop execution via fe_range loop
4. Post-processing

The fe_rangeapproach consists in batch processing of computations, based on a typical FEA steps sequence, presented in table 2.8, looping through a given set if parameter configurations Steps numbers ni can be freely chosen, as long as their order is consistent with the investigation at hand. Typical choice for nm, ns is nr is, respectively, 10, 20 and 30. These numbers can be of use when some of the steps are repeated from one configuration to another.

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step #	name	comment
	<DEFINE>	parameter value set → Range
	<START>	call fe_range loop
10	MeshCfg	geometry, materials, mesh → model
20	SimuCfg	input definition, duration, timestep → model,TimeOpt modified
30	RunCfg	algorithmic parameters. Range.param.RunCfg.choices are TransElec, docpiezo, docepiezo. Associated parameters are stored in Range.param.RunCfg.data.
	<RUN>	results → def, C1
	.save=1	results are stored in *.mat
	<LOOP>	go back to step ni (i∈{m, s, r}) for next config
	<POST>	results vizualisation / aggregation

Table 2.8: FEA steps in a fe_range loop

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xxx

• 30 RunCfg algorithmic parameters. Range.param.RunCfg.choices are TransElec, docpiezo, docepiezo. Associated parameters are stored in Range.param.RunCfg.data. For more details see section ??.

The use of d_shm is illustrated in section ?? on demos invoking two types of shell (A and B, see section ??) under two types of excitations (presented in section ??) with parameters variations and different kinds of post-processing.

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Figure 2.65: Structures implemented

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