**PHD THESIS**

**BARDELLA L. (2000). Mechanical
behavior of glass-filled epoxy resins: experiments, homogenization methods
for syntactic foams, and applications. PhD thesis, University of
Brescia.**

**CONFERENCES**

**Full length articles**

**1) **__BARDELLA L.__, GENNA F. (2000).
Approximate computation of the elastic shear stiffness of a sandwich beam.
GIMC 2000 - XIII Italian Conference on Computational Mechanics, Brescia (Italy). 13-15 November. (pp.
218-226). ISBN: 88-86524-47-1.

**
2) **__BARDELLA L.__, GENNA F. (2005).
Some remarks on the micromechanical modeling of
glass/epoxy syntactic foams. 20th Annual Technical Conference of
the American Society for Composites, Philadelphia, PA (U.S.A.). 6-9 September.
Proceedings edited by F.K. Ko, G.R. Palmese, Y. Gogotsi, A.S.D. Wang. ISBN: 1-932078-50-9

**Brief notes and abstracts**

**1) BARDELLA L. (2000). The
generalized plane stress state: backward Euler consistent algorithm for
the J2-flow theory of plasticity with isotropic hardening. GIMC 2000 - XIII
Italian Conference on Computational Mechanics, Brescia (Italy). 13-15 November. (pp. 60-64).
ISBN: 88-86524-47-1.**

**2) BARDELLA L. (2000). A
phenomenological constitutive law for epoxy resins. GIMC 2000 - XIII
Italian Conference on Computational Mechanics, Brescia (Italy). 13-15 November. (pp. 65-71).
ISBN: 88-86524-47-1.**

**3) **__PRANDINI M.__, BARDELLA L. (2000).
Identification of a constitutive model for epoxy resins. GIMC 2000 - XIII
Italian Conference on Computational Mechanics, Brescia (Italy). 13-15 November. (pp. 125-131).
ISBN: 88-86524-47-1.

**4) BARDELLA L. (2002). On the
modeling of the nonlinear viscoelastic behavior of epoxy resins. Seventh
Pan American Congress of Applied Mechanics (PACAM VII), Temuco (Chile).
2-4 January. (vol. 9, pp. 229-232). Applied Mechanics in the Americas
edited by P. Kittl, G. Diaz, D. Mook, J. Geer.**

**5) **__BARDELLA
L.__, GENNA F. (2002). Unit
cell analysis of the nonlinear behaviour of glass/epoxy syntactic foams.
EUROMECH Colloquium 438 on Constitutive Equations for Polymer
Microcomposites, Vienna (Austria). 15-17 July. (pp. 100-101). Book of Abstracts edited by
L. Dorfmann, A.D. Drodzov, R.W. Ogden. ISBN: 3-900962-40-5.

**6) BARDELLA L. (2007).
A strain gradient crystal plasticity theory based on dislocation densities.
Computational Plasticity IX. Fundamentals and Applications,
Barcelona (Spain). 5-7 September. (pp. 969-972). Proceedings edited by
E. Onate, D.R.J. Owen, B. Suarez. ISBN: 978-84-96736-27-6.**

**7) **__BARDELLA L.__, GIACOMINI A. (2007).
Size effects and strain gradient plasticity: how many length scales
should be involved in the modelling?
AIMETA 2007: XVIII Italian Conference on Theoretical and Applied Mechanics.
Brescia (Italy). 11-14 September. Proceedings edited by
A. Carini, G. Mimmi, R. Piva. ISBN: 978-88-89720-69-1.

**8) **__BARDELLA L.__, MINELLI M. (2007).
On the accurate computation of the deflection of sandwich beams.
AIMETA 2007: XVIII Italian Conference on Theoretical and Applied Mechanics.
Brescia (Italy). 11-14 September. Proceedings edited by
A. Carini, G. Mimmi, R. Piva. ISBN: 978-88-89720-69-1.

**9) BARDELLA L. (2009).
The influence of the dissipation due to the plastic spin on the size effects describable by
means of isotropic strain gradient plasticity.
AIMETA 2009: XIX Italian Conference on Theoretical and Applied Mechanics.
Ancona (Italy). 14-17 September. Proceedings edited by
S. Lenci. ISBN: 978-88-96378-08-3.
**

**10) **__BARDELLA L.__, TONELLI D., MINELLI M. (2009).
How to choose an analytical model for the stress state of sandwich beams under bending.
AIMETA 2009: XIX Italian Conference on Theoretical and Applied Mechanics.
Ancona (Italy). 14-17 September. Proceedings edited by
S. Lenci. ISBN: 978-88-96378-08-3.

**11) **__BARDELLA L.__, SEGURADO J. (2011).
A comparison between strain gradient crystal plasticity and discrete dislocation dynamics.
ICMM2: 2nd International Conference
on Material Modelling. Paris. 31st August-2nd September. Book of abstracts
edited by J. Besson e M. Maziere. pp 189. ISBN: 978-2911256-61-5.

**12) **__BARDELLA L.__, SEGURADO J. (2011).
A comparison between strain gradient crystal plasticity and discrete dislocation dynamics.
AIMETA 2011: XX Italian Conference on Theoretical and Applied Mechanics.
Bologna (Italy). 12-15 September. Proceedings edited by
F. Ubertini, E. Viola, S. de Miranda e G. Castellazzi. ISBN: 978-88-906340-0-0 (print, volume of abstracts)
ISBN: 978-88-906340-1-7 (online, extended proceedings).

**13) **__BARDELLA L.__, SEGURADO J., PANTEGHINI A., LLORCA J. (2013).
Latent hardening size effect in small-scale plasticity.
Computational Plasticity XII. Fundamentals and Applications.
Invited session "Material Size-effects in Plasticity" organised by Viggo Tvergaard and Christian F. Niordson.
Barcelona (Spain). 3-5 September. Proceedings edited by
E. Onate, D.R.J. Owen, D. Peric, B. Suarez. ISBN: 978-84-941531-5-0.

**14) **__BARDELLA L.__, PANTEGHINI A. (2015).
Modelling the torsion of thin metal wires by phenomenological distortion gradient plasticity.
AIMETA 2015: XXII Italian Conference on Theoretical and Applied Mechanics.
Genova (Italy). 14-17 September. Proceedings edited by
L. Gambarotta and A. Morro. ISBN: 978-88-97752-52-3.

**15) PANTEGHINI A., **__BARDELLA L.__ (2016).
On the Finite Element implementation of higher-order gradient plasticity,
with focus on theories based on plastic distortion incompatibility.
XXI Italian Conference on Computational Mechanics and VIII Meeting of the AIMETA Materials Group
(GIMC-GMA 2016), Lucca (Italy). 27-29 June.
Proceedings edited by M. Paggi, A. Bacigalupo, S. Bennati, C. Borri, M. Corrado,
A. Gizzi, P.S. Valvo. Tipolitografia Contini, Sesto Fiorentino (Florence). ISBN: 9791220013338.

**16) **__VOLPINI V.__, RODELLA A., BARDELLA L., CHA Y., PORFIRI M. (2016).
Modelling the sensing response of Ionic Polymer Metal Composites
subject to through-the-thickness compression.
XXI Italian Conference on Computational Mechanics and VIII Meeting of the AIMETA Materials Group
(GIMC-GMA 2016), Lucca (Italy). 27-29 June.
Proceedings edited by M. Paggi, A. Bacigalupo, S. Bennati, C. Borri, M. Corrado,
A. Gizzi, P.S. Valvo. Tipolitografia Contini, Sesto Fiorentino (Florence). ISBN: 9791220013338.

**17) VOLPINI V., BARDELLA L., RODELLA A., CHA Y., **__PORFIRI M.__ (2017).
A theoretical framework for the study of
compression sensing in ionic polymer metal composites.
Electroactive Polymer Actuators and Devices (EAPAD) XIX Conference, Portland, OR (USA). 26-29 March.
Proceedings edited by Yoseph Bar-Cohen.
Proc. Society of Photo-Optical Instrumentation Engineers (SPIE) 10163,
EAPAD 101630M (April 17, 2017).
**DOI
**

**
****18) PANTEGHINI A., **__BARDELLA L.__ (2018).
H(curl) finite element analysis of distortion gradient plasticity.
**
IUTAM Symposium on Size-Effects in Microstructure and Damage Evolution****,
Kgs. Lyngby (DK). 27 May-1 June.
Proceedings edited by K.L. Nielsen, C.F. Niordson, V. Tvergaard.
DTU Mechanical Engineering, Section of Solid Mechanics, Technical University of Denmark.
Nils KLoppels Allé, Bld. 404, DK-2800 Kgs. Lyngby.
ISBN: 978-87-7475-521-0.
**

** **

**Conference participations**

**1) **__BARDELLA L.__, SALVADORI A., GENNA
F. (2001). Effect of preconditioning kernels on the stability of
variationally-based time integration methods. AIMETA --- XIV
Italian Conference on Computational Mechanics, Taormina (CT, Italy). 26-29 September.

**2) BARDELLA L. (2003). A
phenomenological model for the rheology of epoxy resins in the glassy
state. XIV Italian ABAQUS Users' Meeting, Brescia (Italy). 5-7 November.
**

**
3) BARDELLA L. (2007). Size effects and
strain gradient crystal plasticity. First Meeting of the AIMETA Materials Group
(GMA07), Trento (Italy). 23-24 February.
**

**
4) **__BARDELLA L.__, GIACOMINI A. (2008).
A comparison between crystal and
isotropic modellings of strain gradient crystal plasticity.
Second Meeting of the AIMETA Materials Group (GMA08), Genova (Italy). 29 February-1 March.

**
5) BARDELLA L. (2009). The role of the plastic spin in strain gradient plasticity.
Third Meeting of the AIMETA Materials Group
(GMA09), Milano (Italy). 23-24 January.
**

**
6) **__SBURLATI R.__, BARDELLA L. (2009).
Three-dimensional elastic analysis for inhomogeneous plates (FGMS).
Third Meeting of the AIMETA Materials Group
(GMA09), Milano (Italy). 23-24 January.

**7) BARDELLA L. (2009).
Size effects in isotropic strain gradient
plasticity constitutively involving the plastic spin.
4th International Symposium on Defects and Material
Mechanics (ISDMM09), Trento (Italy). 6-9 July.
**

**
8) **__BARDELLA L.__, BELLERI A. (2010).
On the viscoelastic and viscoplastic behaviour of epoxy resins.
Fourth Meeting of the AIMETA Materials Group
(GMA2010), Palermo (Italy). 25-26 February.

**
9) **__BARDELLA L.__, SEGURADO J. (2011).
Size effects in metallic microcomponents: a comparison between
strain gradient plasticity and discrete dislocation dynamics.
Fifth Meeting of the AIMETA Materials Group
(GMA2011), Udine (Italy). 23-25 February.

**
10) **__BARDELLA L.__, SFREDDO A., VENTURA C., GUPTA N., PORFIRI M. (2011).
A comparison among different homogenisation techniques for
estimating the effective elastic moduli of syntactic foams.
ECI Conference Syntactic and Composite Foams III, Cetraro (Italy). 29 May-3 June.

**
11) **__BARDELLA L.__, FESTA A., PORFIRI M. (2012).
Micromechanical models for the failure modalities of syntactic foams
subject to uniaxial compression.
Sixth Meeting of the AIMETA Materials Group
(GMA2012), Lucca (Italy). 13-14 April.

**
12) **__BARDELLA L.__, MALANCA F., PONZO P., PANTEGHINI A., PORFIRI M. (2013).
Micromechanical finite element modelling of the quasi-brittle
failure of syntactic foams subject to uniaxial compression.
CERMODEL 2013, Trento (Italy). 10-12 July.

**
13) **__BARDELLA L.__, SEGURADO J., PANTEGHINI A., LLORCA J. (2014).
Latent hardening size effect in small-scale plasticity.
EUROMECH Colloquium 563 on Generalized Continua and Their Application to the Design
of Composites and Metamaterials, Cisterna di Latina (Italy). 17-21 March.

**
14) **__BARDELLA L.__, PANTEGHINI A. (2014).
On the compressive strength of glass-microballoons/thermoset-matrix syntactic foams.
XX Italian Conference on Computational Mechanics and VII Meeting of the AIMETA Materials Group
(GIMC-GMA2014), Cassino (Italy). 11-13 June.

**
15) BARDELLA L., **__MATTEI O.__ (2014).
On explicit analytic solutions for the accurate evaluation of the shear stress in sandwich beams
with a clamped end.
11th World Congress on Computational Mechanics (WCCM XI) and
5th European Conference on Computational Mechanics (ECCM V),
Barcelona (Spain). 20–25 July.

**
16) **__BARDELLA L.__, PANTEGHINI A. (2015).
On the compressive strength of glass-microballoons/thermoset-matrix syntactic foams.
State of the art and challenges in thermal and mechanical modelling
of ceramic materials, Trento (IT). 20 March.

**
17) **__BARDELLA L.__, PANTEGHINI A. (2015).
Modelling the torsion of thin metal wires by phenomenological distortion gradient plasticity.
KEYNOTE presentation at the 9th European Solid Mechanics Conference,
Madrid (Spain). 6-10 July.

**18) **__MARTÍNEZ-PAÑEDA E.__, NIORDSON C.F., BARDELLA L. (2015).
A finite element basis for distortion gradient plasticity theory.
Computational Plasticity XIII. Fundamentals and Applications.
Invited session "Non-local and Strain Gradient Plasticity".
Barcelona (Spain). 1-3 September.

**19) PANTEGHINI A., **__BARDELLA L.__ (2016).
Implicit finite element algorithms for higher-order gradient plasticity theory.
24th International Congress of Theoretical and Applied Mechanics (ICTAM 2016).
Montréal (Canada).
Invited contribution in the Thematic session "Sizescale Effects in Materials". 21-26 August.

**
20) PERINI G., **__BARDELLA L.__, PANTEGHINI A., GUPTA N., PORFIRI M., TESSIER N. (2017).
Failure behaviour of glass-microballoons/thermoset-matrix syntactic
foams subject to hydrostatic loading.
ECI Conference Syntactic and Composite Foams V, Siracusa (Italy). 26-31 March.

**
21) **__BARDELLA L.__, LERONNI A., SHARGHI H., VOLPINI V., PORFIRI M. (2017).
A Maxwell stress-based explanation of back-relaxation in ionic polymer metal composites.
AIMETA 2017: XXIII Italian Conference on Theoretical and Applied Mechanics.
Salerno (Italy). 4-7 September.

**
22) **__PANTEGHINI A.__, BARDELLA L. (2017).
On the finite element implementation of higher-order gradient plasticity theories.
Computational Plasticity XIV. Fundamentals and Applications.
Invited session "Size-effects in Metal Plasticity".
Barcelona (Spain). 5-7 September.

**
23) LERONNI A., **__BARDELLA L.__, VIVIANI L. (2018).
Influence of shear on sensing and energy harvesting of ionic polymer metal composites.
ESMC 2018 - 10th European Solid Mechanics Conference,
Bologna (Italy). 2-6 July.

**
24) **__VOLPINI V.__, BARDELLA L. (2018).
Compression sensing of ionic polymer metal composites: influence of the material properties in the
polymer/metal interphase.
ESMC 2018 - 10th European Solid Mechanics Conference,
Bologna (Italy). 2-6 July.

**
25) PANTEGHINI A., **__BARDELLA L.__ (2018).
On the mechanical response due to higher-order boundary conditions in distortion gradient plasticity
based on dislocation density tensor.
ESMC 2018 - 10th European Solid Mechanics Conference,
Bologna (Italy). 2-6 July.

**
26) **__PANTEGHINI A.__, BARDELLA L. (2018).
H(curl) finite element analysis of distortion gradient plasticity.
XXII Italian Conference on Computational Mechanics and IX Meeting of the AIMETA Materials Group
(GIMC-GMA 2018), Ferrara (IT). 13-14 September.

**
27) **__VOLPINI V.__, BARDELLA L., PORFIRI M. (2018).
Tailoring physical and geometric properties of ionic polymer metal
composites toward optimised compressive sensing.
XXII Italian Conference on Computational Mechanics and IX Meeting of the AIMETA Materials Group
(GIMC-GMA 2018), Ferrara (IT). 13-14 September.

**
28) **__LERONNI A.__, BARDELLA L., VIVIANI L. (2018).
Influence of shear and boundary conditions on the electrochemomechanics of ionic
polymer metal composites.
XXII Italian Conference on Computational Mechanics and IX Meeting of the AIMETA Materials Group
(GIMC-GMA 2018), Ferrara (IT). 13-14 September.

**PREFACES
**

**
1) BARDELLA L., PAGGI M., VENA P. (2018).
Special issue on "Recent Advances on the Mechanics of Materials".
MECCANICA. vol. 53/3, pp. 509-510 ISSN: 0025-6455.
****DOI
**

**INVITED TALKS
**

**1) A deformation theory of strain gradient
crystal plasticity for the description of the variation in strength and strain
hardening with changing size. MICROMECHANICS SEMINAR SERIES & WORKSHOPS,
Department of Engineering, University of Cambridge (UK), 18 November 2005.
**

**
2) Polycrystal plasticity: size effects and strain gradient modelling.
Department of Engineering, University of Ferrara (Italy), 16 March 2007.
**

**
3) Size effects and strain gradient plasticity: how many length
scales should be involved in the modelling?
Departamento de Ciencia de Materiales, Universidad Politécnica de Madrid (Spain), 3 March 2009.
**

**4) Modelling the size effects of polycrystals by means of strain gradient plasticity.
Department of Structural Engineering, Politecnico di Milano (Italy), 13 November 2009.
**

**5) Studies of small-scale plasticity.
Danish Center for Applied Mathematics and Mechanics, Technical University of Denmark, 7 April 2011.
**

**6) Studies of small-scale plasticity.
Department of Civil, Chemical and Environmental Engineering, University of Genova, 6 March 2014.
**

**7) Crystal and phenomenological distortion-gradient plasticity theories.
Department of Civil Engineering and Architecture, University of Pavia, 11 September 2014.
**

**8) Modelling the torsion of thin metal wires by distortion gradient plasticity.
Fédération Francilienne de Mécanique, Séminaire Île-de-France, École Nationale Supérieure d'Arts et Métiers ParisTech (ENSAM),
15 January 2015.
**

**9) Modelling the torsion of thin metal wires by distortion gradient plasticity.
Danish Center for Applied Mathematics and Mechanics, Technical University of Denmark, 26 May 2015.
**

**INVITED PARTICIPATIONS TO SYMPOSIA
**

**
****
1) New Horizons in Materials Mechanics: Symposium in celebration of the 70th
birthday of Viggo Tvergaard. Copenhagen, 5-7 June 2013.
**