Numerical modeling of soil behaviour under blast loading.

Trade Agreement: Agreement on Internal Trade (AIT)
Tendering Procedures: The bidder must supply Canadian goods
and/or services
Attachment: None
Competitive Procurement Strategy: Best Overall  Proposal
Comprehensive Land Claim Agreement: No
Nature of Requirements: 
Title: Numerical modeling of soil behaviour under blast loading.
Objectives:

The main objective of this contract is to improve numerical
modeling of the soil response under blast loading by
implementing a constitutive material model in LS-DYNA for a
sandygravel soil, by determining its parameters using laboratory
tests and/or in situ tests and then, by validating the
constitutive model with finite element (FE) simulations. The
level of degree of water saturation and the rate of deformation
will have to be included in the soil constitutive models to be
developed. Other parameters such as level of compaction and
particle size and distribution may have to be included in order
to improve soil behaviour prediction under blast conditions.

Background Information:

DRDC Valcartier often uses empirical model such as Westine model
to predict the deformation of simple geometries [Toussaint and
Bouamoul, 2010]. Measurements (displacements, velocities)
between experimental and numerical results on target are usually
compared and validated. However, when complex interactions
between the soil and structure must be modeled, or when the test
conditions are out of the empirical model tested conditions, a
better understanding of soil behaviour is required.  

Constitutive soil models developed for static or quasi-static
loading are different than the ones developed to simulate soil
behaviour under high strain rate loading [Wang and Lu (2003), An
J. (2010)]. Predicting the soil behaviour under blast loading is
challenging because of the variety of parameters influencing its
behaviour. The soil loading conditions evolves from a pressure
wave propagation (near field) to a stress wave propagation (far
field) and is influenced by parameters such as the type of soil,
degree of water saturation, size of particles, particles
distribution, strain rate effect, mine depth of burial, etc. are
all parameters that may have to be considered. The variability
in experimental blast tests have shown the importance of
identifying these critical factors in order to get more
reproducibility in field trials and in order to develop good
constitutive soil models that will be used to predict mine blast
effects on structures. For example, Wang et Lu (2003), Wang et
al. (2004), Grujicic et al. (2008), Grujicic et al. (2009),
Pandurangan (2009), An (2010) and An et al. (2011) have
implemented factors such as the degree of water saturation and
the rate of deformation in their soil material models.

Tasks:

In order to achieve the project objectives, the contractor must
carryout the following tasks:
Task 1: Literature review
Task 2: Development of a soil constitutive model
Task 3: Implementation of the constitutive soil material models
in LS-DYNA
Task 4: Laboratory tests and/or in situ tests
Task 5: Constitutive soil model validation with FE simulations
Task 6 : Reports and deliverables

Period of Contract:

The period of the resulting contract is from the date of the
contract award to March 31, 2015.

Client department :

The services will be rendered to Defence Research and
Development Canada (DRDC-Valcartier).

Estimated funding available:

The maximum funding available for the contract resulting from
the bid solicitation is $200,000.00 CAD (Goods and Services Tax
or the Harmonized Sales Tax extra, as appropriate). Bids valued
in excess of this amount will be considered non-responsive. 
This disclosure does not commit Canada to pay the maximum
funding available.

Point Rated Technical Criteria:

Technical Proposal 50 points minimum 18 points
Experience of the main resource 30 points, minimum 5 points
Bidder's experience 15 points, minimum 5 points
Total: 95 points minimum 28 points.

Basis of Selection - Highest Rated Within Budget

To be declared responsive, a bid must:

(a)	comply with all the requirements of the bid solicitation;
(b)	meet all mandatory technical evaluation criteria;
(c)	obtain the required minimum points for each group of
criteria a pass mark; and
(d)	obtain the required minimum points overall for the technical
evaluation criteria which are subject to point rating.

Bids not meeting (a) or (b) or (c) or (d) will be declared non
responsive.  The responsive bid with the highest number of
points will be recommended for award of a contract, provided
that the total evaluated price does not exceed the budget
available for this requirement.  In the event that the highest
number of points is obtained by more than one responsive bid,
the responsive bid with the lowest evaluated price will be
recommended for award of a contract.

Code of Conduct

IMPORTANT NOTICE: New measures related to Code of Conduct and
certifications included in the solicitation documents requiers
attention.

Other information :

- The requirement is subject to the provisions of the Agreement
on Internal Trade (AIT).  
- The requirement is limited to Canadian services.
- This PWGSC office provides provides procurement services to
the public in both official languages.

This PWGSC office provide purchasing services in both official
languages (French and English.) / Ce bureau de TPSGC fournit des
services d'approvisionnement dans les deux langues officielles
(français et anglais)

Contracting authority
Marie-Michèle Boudrias
N° de téléphone - (418) 649-2806 
Nº fax - (418) 648-2209
E-mail - marie-michele.boudrias@tpsgc-pwgsc.gc.ca
Delivery Date: Above-mentioned

The Crown retains the right to negotiate with suppliers on any
procurement.

Documents may be submitted in either official language of Canada.