smart systems for materials and structures okabe, shirasu

Department of Aerospace Engineering Smart Systems for Materials and Structures Okabe, Kawagoe & Nagumo Lab. / Shirasu Lab. * Multiscale Modeling Strategy + '$# ''#$' %!() $"%$()( ' ,!. *( # ##'# %'$*)( #!*# '') ( ')'() ''. (# ) $#(()( $ '( ,) "'$#(! ")'( # ")'- '$' "*!)(! ("*!)$#( ' ((#)! $' (# # '!!). $ ) %'$*)( Numerical Simulation of Progressive Damage in CFRP 0 ' #))$# # !"#) '#(+'( ' ( ) #)! !*' $ $"%$() ()'*)*'( # ) ()'# ,' )$( '( ' #') ( $)# *( # ) (# ')' # $'' )$ +'. ) ()'*)*'! '!!). "*!)(! #!.(( $' ) #))$# $ )'#(+'( '# # '$((%!. !"#)( ( $#*) *(# ) %'$ *#) !! #!.(( 0%#$! $"%'((+ ()'#) $ !"#) %#$! ()'#) ( "%$')#) *( ""'( ,) $!( ' '+) # ) '') $. ( ()*. ,!! +!$% #*"'! #!.(( ")$ )) # '%'$* ) )() ,) *'. # $#)'*) )$ $() '*)$# '!) )$ '') '))$# * Molecular Dynamics Simulation of Epoxy Resin + '"$() '(# , ( $""$#!. *( ( ")'- # $#(()( $ ( '(# # *'# #) , $'" '$((!## #),$'( + "! ')$#( ( ()*. #!./( ) *'# %'$(( $ )'"$() '(#( . *(# "$!*!' .#"( ("*!)$# # #+())( ) *'# ')'()( # "#! %'$%')( $ '(#( * Multidisciplinary Design Optimization of Composite Aircraft Wing + %%!)$# $ )$ '') (* ( ) ( # -%## '%!. # '#) .'( # )( ()*. ) *!)(%!#'. (# %)"/)$# ")$ $*%! ,) !* # ()'*)*'! #!.(( ( %'$%$( $' ) $%)"*" (# $ ) (% # #)'#! ()'*)*' $ $"%$() '') ,#( * Airport Surface Traffic Flow Analysis + !$! ' )' ( -%) )$ #'( # ) *)*' # # $'' )$ $% ,) )( $%)"/)$# $ $%')$#( (%!!. ) '%$')( # (*''$*## '(% ( '&*' # )( ()*. ) ')'()( $ ' )' !$, ' $)# '$" !) ) # ( $# ) '(*!)( ) $"##) )$'( $ ' )' !$, $# ) '%$') (*' $ # '%$') ' !' . #*"'! #!.(( # ) $%)"! "#"#) ")$ ( #+()) Aerodynamic/structural analysis Shape optimization Flight data around Haneda Airport Air traffic management simulation 35.52 35.53 35.54 35.55 35.56 35.57 139.76 139.78 139.8 139.82 ➢ N Latitude Longitude 0 5 10 15 20 25 30 Taxing speed [kt] RW34R RW34L RW05 Flight data analysis Simulation cell Before Transition state After Base resin Reaction Curing agent Reaction H C N O S Quantum Mechanics Electrons [Å] Atoms [nm] Multiple plies [mm] Engineering design [m] Molecular Dynamics Finite Element Micromechanics Finite Element Laminate Analysis Component Strength, Life, Reliability… Curing reaction property Matrix properties Cohesive traction versus Homogenized constitutive law Fiber/Matrix Phase separation [µm] “Atom to Aircraft” Composite strength Transverse crack D 0 0.9 0.45 Fig.1 Crack Initiation Fig.2 Open hole compression test 88% Peak Load 90% Peak Load 99% Peak Load Peak Load Experiment Simulation 89% Peak Load 95% Peak Load Peak Load

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Department of Aerospace Engineering
Smart Systems for Materials and Structures Okabe, Kawagoe & Nagumo Lab. / Shirasu Lab.
*Multiscale Modeling Strategy+
0 ' #))$# # !"#)
'"$() '(# , ( $""$#!. *( ( ")'- # $#(()(
$ ( '(# # *'# #) , $'" '$((!# # #),$' ( + "! ')$#( ( ()*. #!./( ) *'# %'$(( $ )'"$() '(#( . *(# "$!*!' .#"( ("*!)$# # #+())( ) *'# ')'()( # "#! %'$%')( $ '(#(
%%!)$# $ )$ '') (* ( ) ( #
-%## '%!. # '#) .'( # )( ()*. ) *!)(%!#'. (# %)"/)$# ")$ $*%! ,) !* # ()'*)*'! #!.(( ( %'$%$( $' ) $%)"*" (# $ ) (% # #)'#! ()'*)*' $ $"%$() '') ,#(
!$! ' )' ( -%) )$ #'( # ) *)*' # # $'' )$
$% ,) )( $%)"/)$# $ $%')$#( (%!!. ) '%$')( # (*''$*## '(% ( '&*' # )( ()*. ) ')'()( $ ' )' !$, ' $)# '$" !) ) # ( $# ) '(*!)( ) $"##) )$'( $ ' )' !$, $# ) '%$') (*' $ # '%$') ' !' . #*"'! #!.(( # ) $%)"! "#"#)
Air traffic management simulation
Quantum Mechanics
Electrons []
Atoms [nm]
Homogenized constitutive law
Fiber/Matrix Phase separation
Fig.2 Open hole compression test
88% Peak Load 90% Peak Load 99% Peak Load Peak Load
Experiment
Simulation

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